136542 has 16 divisors (see below), whose sum is σ = 312192. Its totient is φ = 39000.

The previous prime is 136541. The next prime is 136547. The reversal of 136542 is 245631.

It is a happy number.

136542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136542.

It is not an unprimeable number, because it can be changed into a prime (136541) 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, 1584 + ... + 1667.

It is an arithmetic number, because the mean of its divisors is an integer number (19512).

2¹³⁶⁵⁴² is an apocalyptic number.

136542 is an abundant number, since it is smaller than the sum of its proper divisors (175650).

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

136542 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 8 representation: 136542 = (412536)₈.

136542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263.

The product of its digits is 720, while the sum is 21.

The square root of 136542 is about 369.5158995226. The cubic root of 136542 is about 51.4938566839.

It can be divided in two parts, 13 and 6542, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 136542 in words is "one hundred thirty-six thousand, five hundred forty-two".