Q: Is 542,143 a Prime Number?
A: No, 542,143 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 542143 can be evenly divided by 1 7 41 287 1,889 13,223 77,449 and 542,143, with no remainder.
Since 542,143 cannot be divided by just 1 and 542,143, it is not a prime number.