Q: Is 42,728 a Prime Number?
A: No, 42,728 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 42728 can be evenly divided by 1 2 4 7 8 14 28 49 56 98 109 196 218 392 436 763 872 1,526 3,052 5,341 6,104 10,682 21,364 and 42,728, with no remainder.
Since 42,728 cannot be divided by just 1 and 42,728, it is not a prime number.