Q: Is 516,420 a Prime Number?
A: No, 516,420 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 516420 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 19 20 30 36 38 45 57 60 76 90 95 114 151 171 180 190 228 285 302 342 380 453 570 604 684 755 855 906 1,140 1,359 1,510 1,710 1,812 2,265 2,718 2,869 3,020 3,420 4,530 5,436 5,738 6,795 8,607 9,060 11,476 13,590 14,345 17,214 25,821 27,180 28,690 34,428 43,035 51,642 57,380 86,070 103,284 129,105 172,140 258,210 and 516,420, with no remainder.
Since 516,420 cannot be divided by just 1 and 516,420, it is not a prime number.