Q: Is 402,642 a Prime Number?
A: No, 402,642 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 402642 can be evenly divided by 1 2 3 6 9 18 22,369 44,738 67,107 134,214 201,321 and 402,642, with no remainder.
Since 402,642 cannot be divided by just 1 and 402,642, it is not a prime number.