Q: Is 6,420,428 a Prime Number?
A: No, 6,420,428 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 6420428 can be evenly divided by 1 2 4 7 14 28 107 214 428 749 1,498 2,143 2,996 4,286 8,572 15,001 30,002 60,004 229,301 458,602 917,204 1,605,107 3,210,214 and 6,420,428, with no remainder.
Since 6,420,428 cannot be divided by just 1 and 6,420,428, it is not a prime number.