138042175 has 12 divisors (see below), whose sum is σ = 177075720. Its totient is φ = 106625120.

The previous prime is 138042173. The next prime is 138042181. The reversal of 138042175 is 571240831.

It is not a de Polignac number, because 138042175 - 2¹ = 138042173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138042173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94477 + ... + 95926.

It is an arithmetic number, because the mean of its divisors is an integer number (14756310).

Almost surely, 2^138042175 is an apocalyptic number.

138042175 is a deficient number, since it is larger than the sum of its proper divisors (39033545).

138042175 is a wasteful number, since it uses less digits than its factorization.

138042175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190442 (or 190437 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 138042175 is about 11749.1350745491. The cubic root of 138042175 is about 516.8175637408.

The spelling of 138042175 in words is "one hundred thirty-eight million, forty-two thousand, one hundred seventy-five".