Q: Is 1,209,720 a Prime Number?
A: No, 1,209,720 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 1209720 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 17 20 24 30 34 40 51 60 68 85 102 120 136 170 204 255 340 408 510 593 680 1,020 1,186 1,779 2,040 2,372 2,965 3,558 4,744 5,930 7,116 8,895 10,081 11,860 14,232 17,790 20,162 23,720 30,243 35,580 40,324 50,405 60,486 71,160 80,648 100,810 120,972 151,215 201,620 241,944 302,430 403,240 604,860 and 1,209,720, with no remainder.
Since 1,209,720 cannot be divided by just 1 and 1,209,720, it is not a prime number.