Q: Is 42,790 a Prime Number?
A: No, 42,790 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 42790 can be evenly divided by 1 2 5 10 11 22 55 110 389 778 1,945 3,890 4,279 8,558 21,395 and 42,790, with no remainder.
Since 42,790 cannot be divided by just 1 and 42,790, it is not a prime number.