Q: Is 2,121,561 a Composite Number?
A: Yes, 2,121,561 is a composite number.
The number 2,121,561 can be evenly divided by 1 3 9 13 39 117 18,133 54,399 163,197 235,729 707,187 and 2,121,561, with no remainder.
Since 2,121,561 cannot be divided by just 1 and 2,121,561, it is a composite number.