123125871 has 32 divisors (see below), whose sum is σ = 189388800. Its totient is φ = 70368480.

The previous prime is 123125843. The next prime is 123125881. The reversal of 123125871 is 178521321.

It is not a de Polignac number, because 123125871 - 2⁵ = 123125839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123125801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 224820 + ... + 225366.

It is an arithmetic number, because the mean of its divisors is an integer number (5918400).

Almost surely, 2^123125871 is an apocalyptic number.

123125871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123125871 is a deficient number, since it is larger than the sum of its proper divisors (66262929).

123125871 is a wasteful number, since it uses less digits than its factorization.

123125871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939.

The product of its digits is 3360, while the sum is 30.

The square root of 123125871 is about 11096.2097582913. The cubic root of 123125871 is about 497.4885678711.

The spelling of 123125871 in words is "one hundred twenty-three million, one hundred twenty-five thousand, eight hundred seventy-one".