Q: Is 21,210 a Composite Number?
A: Yes, 21,210 is a composite number.
The number 21,210 can be evenly divided by 1 2 3 5 6 7 10 14 15 21 30 35 42 70 101 105 202 210 303 505 606 707 1,010 1,414 1,515 2,121 3,030 3,535 4,242 7,070 10,605 and 21,210, with no remainder.
Since 21,210 cannot be divided by just 1 and 21,210, it is a composite number.