Q: Is 421,372 a Prime Number?
A: No, 421,372 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 421372 can be evenly divided by 1 2 4 7 14 28 101 149 202 298 404 596 707 1,043 1,414 2,086 2,828 4,172 15,049 30,098 60,196 105,343 210,686 and 421,372, with no remainder.
Since 421,372 cannot be divided by just 1 and 421,372, it is not a prime number.