Q: Is 1,237,540 a Prime Number?
A: No, 1,237,540 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 1237540 can be evenly divided by 1 2 4 5 10 20 43 86 172 215 430 860 1,439 2,878 5,756 7,195 14,390 28,780 61,877 123,754 247,508 309,385 618,770 and 1,237,540, with no remainder.
Since 1,237,540 cannot be divided by just 1 and 1,237,540, it is not a prime number.