123129048 has 32 divisors (see below), whose sum is σ = 351797760. Its totient is φ = 35179680.

The previous prime is 123129043. The next prime is 123129067. The reversal of 123129048 is 840921321.

It is a super-2 number, since 2×123129048² = 30321524922772608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123129043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366288 + ... + 366623.

It is an arithmetic number, because the mean of its divisors is an integer number (10993680).

Almost surely, 2^123129048 is an apocalyptic number.

It is an amenable number.

123129048 is an abundant number, since it is smaller than the sum of its proper divisors (228668712).

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

123129048 is a wasteful number, since it uses less digits than its factorization.

123129048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732927 (or 732923 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 123129048 is about 11096.3529143588. The cubic root of 123129048 is about 497.4928467108.

The spelling of 123129048 in words is "one hundred twenty-three million, one hundred twenty-nine thousand, forty-eight".