138261342 has 16 divisors (see below), whose sum is σ = 277627392. Its totient is φ = 45903000.

The previous prime is 138261301. The next prime is 138261371. The reversal of 138261342 is 243162831.

138261342 is nontrivially palindromic in base 9.

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, 44398 + ... + 47409.

It is an arithmetic number, because the mean of its divisors is an integer number (17351712).

Almost surely, 2^138261342 is an apocalyptic number.

138261342 is an abundant number, since it is smaller than the sum of its proper divisors (139366050).

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

138261342 is a wasteful number, since it uses less digits than its factorization.

138261342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92063.

The product of its digits is 6912, while the sum is 30.

The square root of 138261342 is about 11758.4583173135. The cubic root of 138261342 is about 517.0909330030.

The spelling of 138261342 in words is "one hundred thirty-eight million, two hundred sixty-one thousand, three hundred forty-two".