123423604 has 12 divisors (see below), whose sum is σ = 228696804. Its totient is φ = 58081664.

The previous prime is 123423593. The next prime is 123423607. The reversal of 123423604 is 406324321.

It can be written as a sum of positive squares in 2 ways, for example, as 85008400 + 38415204 = 9220^2 + 6198^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123423607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 907459 + ... + 907594.

It is an arithmetic number, because the mean of its divisors is an integer number (19058067).

Almost surely, 2^123423604 is an apocalyptic number.

It is an amenable number.

123423604 is a deficient number, since it is larger than the sum of its proper divisors (105273200).

123423604 is a wasteful number, since it uses less digits than its factorization.

123423604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815074 (or 1815072 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 123423604 is about 11109.6176351844. The cubic root of 123423604 is about 497.8892405949.

Adding to 123423604 its reverse (406324321), we get a palindrome (529747925).

The spelling of 123423604 in words is "one hundred twenty-three million, four hundred twenty-three thousand, six hundred four".