Q: Is 1,020,840 a Prime Number?
A: No, 1,020,840 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 1020840 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 30 40 47 60 94 120 141 181 188 235 282 362 376 470 543 564 705 724 905 940 1,086 1,128 1,410 1,448 1,810 1,880 2,172 2,715 2,820 3,620 4,344 5,430 5,640 7,240 8,507 10,860 17,014 21,720 25,521 34,028 42,535 51,042 68,056 85,070 102,084 127,605 170,140 204,168 255,210 340,280 510,420 and 1,020,840, with no remainder.
Since 1,020,840 cannot be divided by just 1 and 1,020,840, it is not a prime number.