Q: Is 1,428,726 a Prime Number?
A: No, 1,428,726 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 1428726 can be evenly divided by 1 2 3 6 13 26 39 78 169 338 507 1,014 1,409 2,818 4,227 8,454 18,317 36,634 54,951 109,902 238,121 476,242 714,363 and 1,428,726, with no remainder.
Since 1,428,726 cannot be divided by just 1 and 1,428,726, it is not a prime number.