124 (number)

124 1, 2, 4, 31, 62, 124 124 (one hundred [and] twenty-four) is the natural number following 123 and preceding 125. In mathematics thumb|124 magnetic balls arranged into the shape of a stella octangula 124 is an untouchable number, meaning that it is not the sum of proper divisors of any positive number.A005114 Untouchable numbers, also called nonaliquot numbers: impossible values for the sum of aliquot parts function It is a stella octangula number, the number of spheres packed in the shape of a stellated octahedron.A007588 Stella octangula numbers It is also an icosahedral number.A006564 Icosahedral numbers There are 124 different polygons of length 12 formed by edges of the integer lattice, counting two polygons as the same only when one is a translated copy of the other.A002931 Number of self-avoiding polygons of length 2n on square lattice (not allowing rotations) 124 is a perfectly partitioned number, meaning that it divides the number of partitions of 124. It is the first number to do so after 1, 2, and 3.A051177 Perfectly partitioned numbers: numbers k that divide the number of partitions p(k) References 1 Category:Integers