Q: Is 420,408 a Prime Number?
A: No, 420,408 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 420408 can be evenly divided by 1 2 3 4 6 8 9 12 18 24 36 72 5,839 11,678 17,517 23,356 35,034 46,712 52,551 70,068 105,102 140,136 210,204 and 420,408, with no remainder.
Since 420,408 cannot be divided by just 1 and 420,408, it is not a prime number.