126 (one hundred [and] twenty-six) is the natural number following 125 and preceding 127.
126 | |
---|---|
Cardinal | one hundred [and] twenty-six |
Ordinal | 126th (one hundred [and] twenty-sixth) |
Numeral system | 126 |
Factorization | |
Divisors | 1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126 |
Roman numeral | CXXVI |
Binary | 11111102 |
Octal | 1768 |
Duodecimal | A612 |
Hexadecimal | 7E16 |
Contents |
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. However, it is the fifth Granville number, and the third such not to be a perfect number. Also, it is known to be the smallest Granville number with three distinct prime factors, and perhaps the only such Granville number.[1]
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.
On the standard 3x3 Rubik's Cube, starting from the original set position, the basic algorithm of alternating top rotation- side rotation will return the cube to its original state in 126 moves.
126 is also: