123204404 has 6 divisors (see below), whose sum is σ = 215607714. Its totient is φ = 61602200.

The previous prime is 123204397. The next prime is 123204439. The reversal of 123204404 is 404402321.

It can be written as a sum of positive squares in only one way, i.e., 83539600 + 39664804 = 9140^2 + 6298^2 .

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 as a sum of consecutive naturals, namely, 15400547 + ... + 15400554.

It is an arithmetic number, because the mean of its divisors is an integer number (35934619).

Almost surely, 2^123204404 is an apocalyptic number.

It is an amenable number.

123204404 is a deficient number, since it is larger than the sum of its proper divisors (92403310).

123204404 is a wasteful number, since it uses less digits than its factorization.

123204404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30801105 (or 30801103 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 123204404 is about 11099.7479250657. The cubic root of 123204404 is about 497.5943159316.

Adding to 123204404 its reverse (404402321), we get a palindrome (527606725).

The spelling of 123204404 in words is "one hundred twenty-three million, two hundred four thousand, four hundred four".