123230820 has 24 divisors (see below), whose sum is σ = 345046464. Its totient is φ = 32861536.

The previous prime is 123230759. The next prime is 123230857. The reversal of 123230820 is 28032321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1026864 + ... + 1026983.

It is an arithmetic number, because the mean of its divisors is an integer number (14376936).

Almost surely, 2^123230820 is an apocalyptic number.

123230820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123230820 is an abundant number, since it is smaller than the sum of its proper divisors (221815644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123230820 is a wasteful number, since it uses less digits than its factorization.

123230820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2053859 (or 2053857 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 123230820 is about 11100.9377982223. The cubic root of 123230820 is about 497.6298761110.

The spelling of 123230820 in words is "one hundred twenty-three million, two hundred thirty thousand, eight hundred twenty".