Q: Is 1,239,880 a Prime Number?
A: No, 1,239,880 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 1239880 can be evenly divided by 1 2 4 5 8 10 20 40 139 223 278 446 556 695 892 1,112 1,115 1,390 1,784 2,230 2,780 4,460 5,560 8,920 30,997 61,994 123,988 154,985 247,976 309,970 619,940 and 1,239,880, with no remainder.
Since 1,239,880 cannot be divided by just 1 and 1,239,880, it is not a prime number.