Q: Is 1,145,780 a Prime Number?
A: No, 1,145,780 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 1145780 can be evenly divided by 1 2 4 5 10 20 59 118 236 295 590 971 1,180 1,942 3,884 4,855 9,710 19,420 57,289 114,578 229,156 286,445 572,890 and 1,145,780, with no remainder.
Since 1,145,780 cannot be divided by just 1 and 1,145,780, it is not a prime number.