Q: Is 421,812 a Prime Number?
A: No, 421,812 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 421812 can be evenly divided by 1 2 3 4 6 9 12 18 36 11,717 23,434 35,151 46,868 70,302 105,453 140,604 210,906 and 421,812, with no remainder.
Since 421,812 cannot be divided by just 1 and 421,812, it is not a prime number.