126 (number)
From Wikipedia, the free encyclopedia
126 is the natural number following 125 and preceding 127.
| Cardinal | One hundred [and] twenty-six |
| Ordinal | 126th |
| Factorization |  |
| Divisors | 2, 3, 6, 7, 9, 14, 18, 21, 42, 63 |
| Roman numeral | CXXVI |
| Binary | 1111110 |
| Hexadecimal | 7E |
| Duodecimal | A6 |
[edit] In mathematics
One hundred [and] twenty-six is a pentagonal pyramidal number, and a decagonal number as well as a pentatope number. It is an abundant number.
125 and 126 form a Ruth-Aaron pair under the second definition in which repeated prime factors are counted as often as they occur.
In base 10, it is a Harshad number as well as a Friedman number, since 126 = 6 * 21.
[edit] In other fields
One hundred [and] twenty-six is also:
- In photography, the standard 126 film type.
- The seventh Magic number in nuclear physics.
- The designation of a spur route of Interstate 26 in Columbia, South Carolina.
- The year AD 126 or 126 BC.
- In the massive multiplayer online role-playing game RuneScape, 126 is the highest combat level achieveable.
