Q: Is 1,239,628 a Prime Number?
A: No, 1,239,628 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 1239628 can be evenly divided by 1 2 4 13 26 31 52 62 124 403 769 806 1,538 1,612 3,076 9,997 19,994 23,839 39,988 47,678 95,356 309,907 619,814 and 1,239,628, with no remainder.
Since 1,239,628 cannot be divided by just 1 and 1,239,628, it is not a prime number.