Q: Is 542,128 a Prime Number?
A: No, 542,128 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 542128 can be evenly divided by 1 2 4 8 16 31 62 124 248 496 1,093 2,186 4,372 8,744 17,488 33,883 67,766 135,532 271,064 and 542,128, with no remainder.
Since 542,128 cannot be divided by just 1 and 542,128, it is not a prime number.