Q: Is 421,488 a Prime Number?
A: No, 421,488 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 421488 can be evenly divided by 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 2,927 5,854 8,781 11,708 17,562 23,416 26,343 35,124 46,832 52,686 70,248 105,372 140,496 210,744 and 421,488, with no remainder.
Since 421,488 cannot be divided by just 1 and 421,488, it is not a prime number.