Q: Is 1,421,538 a Prime Number?
A: No, 1,421,538 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 1421538 can be evenly divided by 1 2 3 6 23 46 69 138 10,301 20,602 30,903 61,806 236,923 473,846 710,769 and 1,421,538, with no remainder.
Since 1,421,538 cannot be divided by just 1 and 1,421,538, it is not a prime number.