Q: Is 42,128 a Prime Number?
A: No, 42,128 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 42128 can be evenly divided by 1 2 4 8 16 2,633 5,266 10,532 21,064 and 42,128, with no remainder.
Since 42,128 cannot be divided by just 1 and 42,128, it is not a prime number.