Q: Is 1,728,121 a Composite Number?
A: No, 1,728,121 is not a composite number; it is a prime number.
The number 1,728,121 can be evenly divided by 1 and 1,728,121, with no remainder.
Since 1,728,121 can be divided by just 1 and 1,728,121, it is not a composite number.