100056123 has 12 divisors (see below), whose sum is σ = 144874288. Its totient is φ = 66543120.

The previous prime is 100056079. The next prime is 100056133. The reversal of 100056123 is 321650001.

100056123 is a `hidden beast` number, since 100 + 0 + 561 + 2 + 3 = 666.

It is not a de Polignac number, because 100056123 - 2¹⁰ = 100055099 is a prime.

It is a super-2 number, since 2×100056123² = 20022455499582258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100056096 and 100056105.

It is not an unprimeable number, because it can be changed into a prime (100056133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9415 + ... + 16992.

Almost surely, 2^100056123 is an apocalyptic number.

100056123 is a deficient number, since it is larger than the sum of its proper divisors (44818165).

100056123 is a wasteful number, since it uses less digits than its factorization.

100056123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26834 (or 26831 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 100056123 is about 10002.8057563866. The cubic root of 100056123 is about 464.2457004186.

The spelling of 100056123 in words is "one hundred million, fifty-six thousand, one hundred twenty-three".