Q: Is 3,662,421 a Prime Number?
A: No, 3,662,421 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 3662421 can be evenly divided by 1 3 7 19 21 57 67 133 137 201 399 411 469 959 1,273 1,407 2,603 2,877 3,819 7,809 8,911 9,179 18,221 26,733 27,537 54,663 64,253 174,401 192,759 523,203 1,220,807 and 3,662,421, with no remainder.
Since 3,662,421 cannot be divided by just 1 and 3,662,421, it is not a prime number.