Q: Is 421,028 a Prime Number?
A: No, 421,028 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 421028 can be evenly divided by 1 2 4 67 134 268 1,571 3,142 6,284 105,257 210,514 and 421,028, with no remainder.
Since 421,028 cannot be divided by just 1 and 421,028, it is not a prime number.