Q: Is 42,040 a Prime Number?
A: No, 42,040 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 42040 can be evenly divided by 1 2 4 5 8 10 20 40 1,051 2,102 4,204 5,255 8,408 10,510 21,020 and 42,040, with no remainder.
Since 42,040 cannot be divided by just 1 and 42,040, it is not a prime number.