Q: Is 397,642 a Prime Number?
A: No, 397,642 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 397642 can be evenly divided by 1 2 7 14 28,403 56,806 198,821 and 397,642, with no remainder.
Since 397,642 cannot be divided by just 1 and 397,642, it is not a prime number.