Q: Is 78,642 a Prime Number?
A: No, 78,642 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 78642 can be evenly divided by 1 2 3 6 9 17 18 34 51 102 153 257 306 514 771 1,542 2,313 4,369 4,626 8,738 13,107 26,214 39,321 and 78,642, with no remainder.
Since 78,642 cannot be divided by just 1 and 78,642, it is not a prime number.