123305204 has 24 divisors (see below), whose sum is σ = 241145856. Its totient is φ = 54680000.

The previous prime is 123305177. The next prime is 123305227. The reversal of 123305204 is 402503321.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32372 + ... + 35979.

It is an arithmetic number, because the mean of its divisors is an integer number (10047744).

Almost surely, 2^123305204 is an apocalyptic number.

It is an amenable number.

123305204 is a deficient number, since it is larger than the sum of its proper divisors (117840652).

123305204 is a wasteful number, since it uses less digits than its factorization.

123305204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68407 (or 68405 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 123305204 is about 11104.2876403667. The cubic root of 123305204 is about 497.7299816297.

Adding to 123305204 its reverse (402503321), we get a palindrome (525808525).

The spelling of 123305204 in words is "one hundred twenty-three million, three hundred five thousand, two hundred four".