Q: Is 478,642 a Prime Number?
A: No, 478,642 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 478642 can be evenly divided by 1 2 89 178 2,689 5,378 239,321 and 478,642, with no remainder.
Since 478,642 cannot be divided by just 1 and 478,642, it is not a prime number.