Q: Is 642,499 a Prime Number?
A: No, 642,499 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 642499 can be evenly divided by 1 11 13 143 4,493 49,423 58,409 and 642,499, with no remainder.
Since 642,499 cannot be divided by just 1 and 642,499, it is not a prime number.