Q: Is 21,126 a Composite Number?
A: Yes, 21,126 is a composite number.
The number 21,126 can be evenly divided by 1 2 3 6 7 14 21 42 503 1,006 1,509 3,018 3,521 7,042 10,563 and 21,126, with no remainder.
Since 21,126 cannot be divided by just 1 and 21,126, it is a composite number.