135120204 has 48 divisors (see below), whose sum is σ = 352128000. Its totient is φ = 44806608.

The previous prime is 135120187. The next prime is 135120211. The reversal of 135120204 is 402021531.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18349 + ... + 24635.

It is an arithmetic number, because the mean of its divisors is an integer number (7336000).

Almost surely, 2^135120204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135120204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176064000).

135120204 is an abundant number, since it is smaller than the sum of its proper divisors (217007796).

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

135120204 is a wasteful number, since it uses less digits than its factorization.

135120204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6499 (or 6491 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 135120204 is about 11624.1216442362. The cubic root of 135120204 is about 513.1449950940.

Adding to 135120204 its reverse (402021531), we get a palindrome (537141735).

The spelling of 135120204 in words is "one hundred thirty-five million, one hundred twenty thousand, two hundred four".