Q: Is 1,420,628 a Prime Number?
A: No, 1,420,628 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 1420628 can be evenly divided by 1 2 4 11 22 44 83 166 332 389 778 913 1,556 1,826 3,652 4,279 8,558 17,116 32,287 64,574 129,148 355,157 710,314 and 1,420,628, with no remainder.
Since 1,420,628 cannot be divided by just 1 and 1,420,628, it is not a prime number.