138429404 has 12 divisors (see below), whose sum is σ = 242952024. Its totient is φ = 69014544.

The previous prime is 138429397. The next prime is 138429449. The reversal of 138429404 is 404924831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48479 + ... + 51254.

It is an arithmetic number, because the mean of its divisors is an integer number (20246002).

Almost surely, 2^138429404 is an apocalyptic number.

It is an amenable number.

138429404 is a deficient number, since it is larger than the sum of its proper divisors (104522620).

138429404 is a wasteful number, since it uses less digits than its factorization.

138429404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100084 (or 100082 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 138429404 is about 11765.6025770039. The cubic root of 138429404 is about 517.3003628345.

The spelling of 138429404 in words is "one hundred thirty-eight million, four hundred twenty-nine thousand, four hundred four".