Q: Is 642,507 a Prime Number?
A: No, 642,507 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 642507 can be evenly divided by 1 3 79 237 2,711 8,133 214,169 and 642,507, with no remainder.
Since 642,507 cannot be divided by just 1 and 642,507, it is not a prime number.