Q: Is 542,178 a Prime Number?
A: No, 542,178 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 542178 can be evenly divided by 1 2 3 6 7 9 13 14 18 21 26 39 42 63 78 91 117 126 182 234 273 331 546 662 819 993 1,638 1,986 2,317 2,979 4,303 4,634 5,958 6,951 8,606 12,909 13,902 20,853 25,818 30,121 38,727 41,706 60,242 77,454 90,363 180,726 271,089 and 542,178, with no remainder.
Since 542,178 cannot be divided by just 1 and 542,178, it is not a prime number.