Q: Is 2,421,123 a Prime Number?
A: No, 2,421,123 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 2421123 can be evenly divided by 1 3 17 29 51 87 493 1,479 1,637 4,911 27,829 47,473 83,487 142,419 807,041 and 2,421,123, with no remainder.
Since 2,421,123 cannot be divided by just 1 and 2,421,123, it is not a prime number.