Q: Is 1,121,428 a Prime Number?
A: No, 1,121,428 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 1121428 can be evenly divided by 1 2 4 7 11 14 22 28 44 77 121 154 242 308 331 484 662 847 1,324 1,694 2,317 3,388 3,641 4,634 7,282 9,268 14,564 25,487 40,051 50,974 80,102 101,948 160,204 280,357 560,714 and 1,121,428, with no remainder.
Since 1,121,428 cannot be divided by just 1 and 1,121,428, it is not a prime number.