135204 has 24 divisors (see below), whose sum is σ = 332640. Its totient is φ = 42624.

The previous prime is 135197. The next prime is 135209. The reversal of 135204 is 402531.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (135209) 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, 69 + ... + 524.

It is an arithmetic number, because the mean of its divisors is an integer number (13860).

2¹³⁵²⁰⁴ is an apocalyptic number.

It is an amenable number.

135204 is an abundant number, since it is smaller than the sum of its proper divisors (197436).

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

135204 is a wasteful number, since it uses less digits than its factorization.

135204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 135204 is about 367.7009654597. The cubic root of 135204 is about 51.3251050322.

Adding to 135204 its reverse (402531), we get a palindrome (537735).

The spelling of 135204 in words is "one hundred thirty-five thousand, two hundred four".