120135512 has 16 divisors (see below), whose sum is σ = 257433360. Its totient is φ = 51486624.

The previous prime is 120135511. The next prime is 120135517. The reversal of 120135512 is 215531021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120135511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072583 + ... + 1072694.

It is an arithmetic number, because the mean of its divisors is an integer number (16089585).

Almost surely, 2^120135512 is an apocalyptic number.

It is an amenable number.

120135512 is an abundant number, since it is smaller than the sum of its proper divisors (137297848).

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

120135512 is a wasteful number, since it uses less digits than its factorization.

120135512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145290 (or 2145286 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 120135512 is about 10960.6346531576. The cubic root of 120135512 is about 493.4280124265.

Adding to 120135512 its reverse (215531021), we get a palindrome (335666533).

The spelling of 120135512 in words is "one hundred twenty million, one hundred thirty-five thousand, five hundred twelve".