135044 has 36 divisors (see below), whose sum is σ = 301644. Its totient is φ = 52416.

The previous prime is 135043. The next prime is 135049. The reversal of 135044 is 440531.

It can be written as a sum of positive squares in 2 ways, for example, as 56644 + 78400 = 238^2 + 280^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2522 + ... + 2574.

It is an arithmetic number, because the mean of its divisors is an integer number (8379).

2¹³⁵⁰⁴⁴ is an apocalyptic number.

135044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150822).

135044 is an abundant number, since it is smaller than the sum of its proper divisors (166600).

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

135044 is a wasteful number, since it uses less digits than its factorization.

135044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 135044 is about 367.4833329554. The cubic root of 135044 is about 51.3048510499.

Adding to 135044 its reverse (440531), we get a palindrome (575575).

The spelling of 135044 in words is "one hundred thirty-five thousand, forty-four".