# Is 126 a Prime Number?

Is 126 a prime number? How do you know that 126 is prime or composite? Let us first understand what makes a number 'prime'. If a number has only 2 factors (1 and the number itself), then it is a prime number. If the number has more than 2 factors, then it is composite. Now, what do you think of 126? Is 126 a prime number? * "No, 126 is not a prime number."* Since 126 has more than 2 factors i.e. 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, it is a composite number. Let's study this in detail.

**Is 126 a prime number? -**No**Is 126 a composite number? -**Yes**Factors of 126 -**1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126**Prime Factors of 126 -**2, 3, 7**Is 126 a perfect square? -**No

## Is 126 a Prime Number?

No, 126 is not a prime number. The number 126 is divisible by 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126. For a number to be classified as a prime number, it should have exactly two factors. Since 126 has more than two factors, i.e. 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, it is not a prime number.

## Why is 126 not a Prime Number?

To understand whether 126 is prime or composite, it is important to find its factors.

**Factors of 126:** 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126

Since 126 has more than 2 factors, we can say that 126 is not a prime number.

## Is 126 a Composite Number?

Yes, since 126 has more than two factors i.e. 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126. In other words, 126 is a composite number because 126 has more than 2 factors.

**Problem Statements: **

Is 126 a Prime Number? | No |

Is 126 a Composite Number? | Yes |

Square Root of 126 | 11.224972 |

Multiples of 126 | 126, 252, 378, 504, 630, 756, 882, 1008, 1134, 1260 |

Square of 126 | 15876 |

Is 126 a Perfect Cube? | No |

Is 126 a Perfect Square? | No |

Is 126 an Odd Number? | No |

Is 126 an Even Number? | Yes |

Cube Root of 126 | 5.01329 |

**Fun Facts: **

- A palindrome prime is a prime number that when read in reverse order results in the same number. Examples - 10601, 11311, 12421
- 23 is the smallest prime number having consecutive digits.
- 5 is the only prime number having the last digit as 5.

**☛ Also Check: **

- Is 133 a Prime Number? - No
- Is 87 a Prime Number? - No
- Is 89 a Prime Number? - Yes
- Is 43 a Prime Number? - Yes
- Is 61 a Prime Number? - Yes
- Is 257 a Prime Number? - Yes
- Is 247 a Prime Number? - No
- Is 697 a Prime Number? - No

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