Q: Is 42,570 a Prime Number?
A: No, 42,570 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 42570 can be evenly divided by 1 2 3 5 6 9 10 11 15 18 22 30 33 43 45 55 66 86 90 99 110 129 165 198 215 258 330 387 430 473 495 645 774 946 990 1,290 1,419 1,935 2,365 2,838 3,870 4,257 4,730 7,095 8,514 14,190 21,285 and 42,570, with no remainder.
Since 42,570 cannot be divided by just 1 and 42,570, it is not a prime number.