138136 has 16 divisors (see below), whose sum is σ = 267840. Its totient is φ = 66720.

The previous prime is 138113. The next prime is 138139. The reversal of 138136 is 631831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31 + ... + 526.

It is an arithmetic number, because the mean of its divisors is an integer number (16740).

2¹³⁸¹³⁶ is an apocalyptic number.

It is an amenable number.

138136 is a deficient number, since it is larger than the sum of its proper divisors (129704).

138136 is a wasteful number, since it uses less digits than its factorization.

138136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 590 counting only the distinct ones).

The product of its digits is 432, while the sum is 22.

The square root of 138136 is about 371.6665171898. Note that the first 3 decimals coincide. The cubic root of 138136 is about 51.6934628027.

Adding to 138136 its reverse (631831), we get a palindrome (769967).

The spelling of 138136 in words is "one hundred thirty-eight thousand, one hundred thirty-six".