Q: Is 8,400,420 a Prime Number?
A: No, 8,400,420 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 8400420 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 59 60 63 70 84 90 105 113 118 126 140 177 180 210 226 236 252 295 315 339 354 413 420 452 531 565 590 630 678 708 791 826 885 1,017 1,062 1,130 1,180 1,239 1,260 1,356 1,582 1,652 1,695 1,770 2,034 2,065 2,124 2,260 2,373 2,478 2,655 3,164 3,390 3,540 3,717 3,955 4,068 4,130 4,746 4,956 5,085 5,310 6,195 6,667 6,780 7,119 7,434 7,910 8,260 9,492 10,170 10,620 11,865 12,390 13,334 14,238 14,868 15,820 18,585 20,001 20,340 23,730 24,780 26,668 28,476 33,335 35,595 37,170 40,002 46,669 47,460 60,003 66,670 71,190 74,340 80,004 93,338 100,005 120,006 133,340 140,007 142,380 186,676 200,010 233,345 240,012 280,014 300,015 400,020 420,021 466,690 560,028 600,030 700,035 840,042 933,380 1,200,060 1,400,070 1,680,084 2,100,105 2,800,140 4,200,210 and 8,400,420, with no remainder.
Since 8,400,420 cannot be divided by just 1 and 8,400,420, it is not a prime number.