136742538 has 16 divisors (see below), whose sum is σ = 273771360. Its totient is φ = 45533136.

The previous prime is 136742497. The next prime is 136742539. The reversal of 136742538 is 835247631.

It is a junction number, because it is equal to n+sod(n) for n = 136742496 and 136742505.

It is not an unprimeable number, because it can be changed into a prime (136742539) 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, 5448 + ... + 17411.

It is an arithmetic number, because the mean of its divisors is an integer number (17110710).

Almost surely, 2^136742538 is an apocalyptic number.

136742538 is an abundant number, since it is smaller than the sum of its proper divisors (137028822).

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

136742538 is a wasteful number, since it uses less digits than its factorization.

136742538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23861.

The product of its digits is 120960, while the sum is 39.

The square root of 136742538 is about 11693.6965070930. The cubic root of 136742538 is about 515.1905387273.

The spelling of 136742538 in words is "one hundred thirty-six million, seven hundred forty-two thousand, five hundred thirty-eight".