138292534 has 4 divisors (see below), whose sum is σ = 207438804. Its totient is φ = 69146266.

The previous prime is 138292523. The next prime is 138292541. The reversal of 138292534 is 435292831.

138292534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 435292831 = 19 ⋅22910149.

It is a junction number, because it is equal to n+sod(n) for n = 138292493 and 138292502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34573132 + ... + 34573135.

It is an arithmetic number, because the mean of its divisors is an integer number (51859701).

Almost surely, 2^138292534 is an apocalyptic number.

138292534 is a deficient number, since it is larger than the sum of its proper divisors (69146270).

138292534 is an equidigital number, since it uses as much as digits as its factorization.

138292534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69146269.

The product of its digits is 51840, while the sum is 37.

The square root of 138292534 is about 11759.7846068710. The cubic root of 138292534 is about 517.1298156181.

The spelling of 138292534 in words is "one hundred thirty-eight million, two hundred ninety-two thousand, five hundred thirty-four".