Q: Is 1,427,540 a Prime Number?
A: No, 1,427,540 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 1427540 can be evenly divided by 1 2 4 5 10 20 137 274 521 548 685 1,042 1,370 2,084 2,605 2,740 5,210 10,420 71,377 142,754 285,508 356,885 713,770 and 1,427,540, with no remainder.
Since 1,427,540 cannot be divided by just 1 and 1,427,540, it is not a prime number.