Q: Is 1,561,742 a Prime Number?
A: No, 1,561,742 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 1561742 can be evenly divided by 1 2 7 13 14 26 91 182 8,581 17,162 60,067 111,553 120,134 223,106 780,871 and 1,561,742, with no remainder.
Since 1,561,742 cannot be divided by just 1 and 1,561,742, it is not a prime number.