Q: Is 421,281 a Prime Number?
A: No, 421,281 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 421281 can be evenly divided by 1 3 7 9 21 27 63 81 189 567 743 2,229 5,201 6,687 15,603 20,061 46,809 60,183 140,427 and 421,281, with no remainder.
Since 421,281 cannot be divided by just 1 and 421,281, it is not a prime number.