135542120 has 32 divisors (see below), whose sum is σ = 348537600. Its totient is φ = 46471488.

The previous prime is 135542111. The next prime is 135542131. The reversal of 135542120 is 21245531.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 241760 + ... + 242319.

It is an arithmetic number, because the mean of its divisors is an integer number (10891800).

Almost surely, 2^135542120 is an apocalyptic number.

135542120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135542120 is an abundant number, since it is smaller than the sum of its proper divisors (212995480).

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

135542120 is a wasteful number, since it uses less digits than its factorization.

135542120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484097 (or 484093 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 135542120 is about 11642.2557951627. The cubic root of 135542120 is about 513.6785425604.

Adding to 135542120 its reverse (21245531), we get a palindrome (156787651).

The spelling of 135542120 in words is "one hundred thirty-five million, five hundred forty-two thousand, one hundred twenty".