Q: Is 427,428 a Prime Number?
A: No, 427,428 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 427428 can be evenly divided by 1 2 3 4 6 9 12 18 31 36 62 93 124 186 279 372 383 558 766 1,116 1,149 1,532 2,298 3,447 4,596 6,894 11,873 13,788 23,746 35,619 47,492 71,238 106,857 142,476 213,714 and 427,428, with no remainder.
Since 427,428 cannot be divided by just 1 and 427,428, it is not a prime number.