Q: Is 421,840 a Composite Number?
A: Yes, 421,840 is a composite number.
The number 421,840 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 5,273 10,546 21,092 26,365 42,184 52,730 84,368 105,460 210,920 and 421,840, with no remainder.
Since 421,840 cannot be divided by just 1 and 421,840, it is a composite number.