Q: Is 421,638 a Composite Number?
A: Yes, 421,638 is a composite number.
The number 421,638 can be evenly divided by 1 2 3 6 7 14 21 42 10,039 20,078 30,117 60,234 70,273 140,546 210,819 and 421,638, with no remainder.
Since 421,638 cannot be divided by just 1 and 421,638, it is a composite number.