138065404 has 24 divisors (see below), whose sum is σ = 251244000. Its totient is φ = 66306240.

The previous prime is 138065363. The next prime is 138065429. The reversal of 138065404 is 404560831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20094 + ... + 26074.

It is an arithmetic number, because the mean of its divisors is an integer number (10468500).

Almost surely, 2^138065404 is an apocalyptic number.

It is an amenable number.

138065404 is a deficient number, since it is larger than the sum of its proper divisors (113178596).

138065404 is a wasteful number, since it uses less digits than its factorization.

138065404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6213 (or 6211 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 138065404 is about 11750.1235738183. The cubic root of 138065404 is about 516.8465512148.

The spelling of 138065404 in words is "one hundred thirty-eight million, sixty-five thousand, four hundred four".