123112040404 has 6 divisors (see below), whose sum is σ = 215446070714. Its totient is φ = 61556020200.

The previous prime is 123112040399. The next prime is 123112040437. The reversal of 123112040404 is 404040211321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 98594744004 + 24517296400 = 313998^2 + 156580^2 .

It is a super-2 number, since 2×123112040404² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15389005047 + ... + 15389005054.

Almost surely, 2^123112040404 is an apocalyptic number.

It is an amenable number.

123112040404 is a deficient number, since it is larger than the sum of its proper divisors (92334030310).

123112040404 is a wasteful number, since it uses less digits than its factorization.

123112040404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30778010105 (or 30778010103 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 123112040404 its reverse (404040211321), we get a palindrome (527152251725).

The spelling of 123112040404 in words is "one hundred twenty-three billion, one hundred twelve million, forty thousand, four hundred four".