Q: Is 1,231,428 a Prime Number?
A: No, 1,231,428 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 1231428 can be evenly divided by 1 2 3 4 6 11 12 19 22 33 38 44 57 66 76 114 132 209 228 418 491 627 836 982 1,254 1,473 1,964 2,508 2,946 5,401 5,892 9,329 10,802 16,203 18,658 21,604 27,987 32,406 37,316 55,974 64,812 102,619 111,948 205,238 307,857 410,476 615,714 and 1,231,428, with no remainder.
Since 1,231,428 cannot be divided by just 1 and 1,231,428, it is not a prime number.