Q: Is 1,200,780 a Prime Number?
A: No, 1,200,780 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 1200780 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 60 63 70 84 90 105 126 140 180 210 252 315 420 630 953 1,260 1,906 2,859 3,812 4,765 5,718 6,671 8,577 9,530 11,436 13,342 14,295 17,154 19,060 20,013 26,684 28,590 33,355 34,308 40,026 42,885 57,180 60,039 66,710 80,052 85,770 100,065 120,078 133,420 171,540 200,130 240,156 300,195 400,260 600,390 and 1,200,780, with no remainder.
Since 1,200,780 cannot be divided by just 1 and 1,200,780, it is not a prime number.