Q: Is 421,172 a Prime Number?
A: No, 421,172 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 421172 can be evenly divided by 1 2 4 71 142 284 1,483 2,966 5,932 105,293 210,586 and 421,172, with no remainder.
Since 421,172 cannot be divided by just 1 and 421,172, it is not a prime number.