Q: Is 782,420 a Prime Number?
A: No, 782,420 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 782420 can be evenly divided by 1 2 4 5 10 19 20 29 38 58 71 76 95 116 142 145 190 284 290 355 380 551 580 710 1,102 1,349 1,420 2,059 2,204 2,698 2,755 4,118 5,396 5,510 6,745 8,236 10,295 11,020 13,490 20,590 26,980 39,121 41,180 78,242 156,484 195,605 391,210 and 782,420, with no remainder.
Since 782,420 cannot be divided by just 1 and 782,420, it is not a prime number.