138804126 has 16 divisors (see below), whose sum is σ = 289678464. Its totient is φ = 44256344.

The previous prime is 138804109. The next prime is 138804151. The reversal of 138804126 is 621408831.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 502776 + ... + 503051.

It is an arithmetic number, because the mean of its divisors is an integer number (18104904).

Almost surely, 2^138804126 is an apocalyptic number.

138804126 is an abundant number, since it is smaller than the sum of its proper divisors (150874338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138804126 is a wasteful number, since it uses less digits than its factorization.

138804126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005855.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 138804126 is about 11781.5162861153. The cubic root of 138804126 is about 517.7667116852.

The spelling of 138804126 in words is "one hundred thirty-eight million, eight hundred four thousand, one hundred twenty-six".