Q: Is 428,142 a Prime Number?
A: No, 428,142 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 428142 can be evenly divided by 1 2 3 6 11 13 22 26 33 39 66 78 143 286 429 499 858 998 1,497 2,994 5,489 6,487 10,978 12,974 16,467 19,461 32,934 38,922 71,357 142,714 214,071 and 428,142, with no remainder.
Since 428,142 cannot be divided by just 1 and 428,142, it is not a prime number.