Compare 40 vs 42
| Property | 40 | 42 |
|---|---|---|
| Type | composite number | composite number |
| Unique factors | 2 | 3 |
| Total factors | 4 | 3 |
| Prime factorization | 23 × 51 | 21 × 31 × 71 |
| Prime factorization | 2 × 2 × 2 × 5 | 2 × 3 × 7 |
| Divisors count | 8 | 8 |
| Divisors | 1, 2, 4, 5, 8, 10, 20, 40 | 1, 2, 3, 6, 7, 14, 21, 42 |
| Number of properties | 0 | 0 |
| Roman numberals | XL | XLII |
| Base 2 | 1010002 | 1010102 |
| Base 3 | 11113 | 11203 |
| Base 4 | 2204 | 2224 |
| Base 5 | 1305 | 1325 |
| Base 6 | 1046 | 1106 |
| Base 7 | 557 | 607 |
| Base 8 | 508 | 528 |
| Base 9 | 449 | 469 |
| Base 10 | 4010 | 4210 |
| Base 11 | 3711 | 3911 |
| Base 12 | 3412 | 3612 |
| Base 13 | 3113 | 3313 |
| Base 14 | 2c14 | 3014 |
| Base 15 | 2a15 | 2c15 |
| Base 16 | 2816 | 2a16 |