138599842 has 8 divisors (see below), whose sum is σ = 208060416. Its totient is φ = 69246372.

The previous prime is 138599837. The next prime is 138599893. The reversal of 138599842 is 248995831.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 23458 + ... + 28765.

It is an arithmetic number, because the mean of its divisors is an integer number (26007552).

Almost surely, 2^138599842 is an apocalyptic number.

138599842 is a deficient number, since it is larger than the sum of its proper divisors (69460574).

138599842 is a wasteful number, since it uses less digits than its factorization.

138599842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53552.

The product of its digits is 622080, while the sum is 49.

The square root of 138599842 is about 11772.8434118526. The cubic root of 138599842 is about 517.5125804623.

The spelling of 138599842 in words is "one hundred thirty-eight million, five hundred ninety-nine thousand, eight hundred forty-two".