Compare 42 vs 49
| Property | 42 | 49 |
|---|---|---|
| Type | composite number | semiprime |
| Unique factors | 3 | 1 |
| Total factors | 3 | 2 |
| Prime factorization | 21 × 31 × 71 | 72 |
| Prime factorization | 2 × 3 × 7 | 7 × 7 |
| Divisors count | 8 | 3 |
| Divisors | 1, 2, 3, 6, 7, 14, 21, 42 | 1, 7, 49 |
| Number of properties | 0 | 1 |
| Semiprimes | 17th | |
| Roman numberals | XLII | XLIX |
| Base 2 | 1010102 | 1100012 |
| Base 3 | 11203 | 12113 |
| Base 4 | 2224 | 3014 |
| Base 5 | 1325 | 1445 |
| Base 6 | 1106 | 1216 |
| Base 7 | 607 | 1007 |
| Base 8 | 528 | 618 |
| Base 9 | 469 | 549 |
| Base 10 | 4210 | 4910 |
| Base 11 | 3911 | 4511 |
| Base 12 | 3612 | 4112 |
| Base 13 | 3313 | 3a13 |
| Base 14 | 3014 | 3714 |
| Base 15 | 2c15 | 3415 |
| Base 16 | 2a16 | 3116 |