138582042 has 16 divisors (see below), whose sum is σ = 277497792. Its totient is φ = 46138400.

The previous prime is 138582007. The next prime is 138582047. The reversal of 138582042 is 240285831.

It is a junction number, because it is equal to n+sod(n) for n = 138581994 and 138582012.

It is not an unprimeable number, because it can be changed into a prime (138582047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8334 + ... + 18617.

It is an arithmetic number, because the mean of its divisors is an integer number (17343612).

Almost surely, 2^138582042 is an apocalyptic number.

138582042 is an abundant number, since it is smaller than the sum of its proper divisors (138915750).

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

138582042 is a wasteful number, since it uses less digits than its factorization.

138582042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27813.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 138582042 is about 11772.0874104808. The cubic root of 138582042 is about 517.4904252704.

The spelling of 138582042 in words is "one hundred thirty-eight million, five hundred eighty-two thousand, forty-two".