Q: Is 542,685 a Prime Number?
A: No, 542,685 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 542685 can be evenly divided by 1 3 5 11 13 15 23 33 39 55 65 69 115 121 143 165 195 253 299 345 363 429 605 715 759 897 1,265 1,495 1,573 1,815 2,145 2,783 3,289 3,795 4,485 4,719 7,865 8,349 9,867 13,915 16,445 23,595 36,179 41,745 49,335 108,537 180,895 and 542,685, with no remainder.
Since 542,685 cannot be divided by just 1 and 542,685, it is not a prime number.