Q: Is 1,421,840 a Composite Number?
A: Yes, 1,421,840 is a composite number.
The number 1,421,840 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 280 560 2,539 5,078 10,156 12,695 17,773 20,312 25,390 35,546 40,624 50,780 71,092 88,865 101,560 142,184 177,730 203,120 284,368 355,460 710,920 and 1,421,840, with no remainder.
Since 1,421,840 cannot be divided by just 1 and 1,421,840, it is a composite number.