120115656 has 64 divisors (see below), whose sum is σ = 334800000. Its totient is φ = 39901248.

The previous prime is 120115621. The next prime is 120115661. The reversal of 120115656 is 656511021.

It is a happy number.

120115656 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 1 + 5 + 656 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76770 + ... + 78318.

It is an arithmetic number, because the mean of its divisors is an integer number (5231250).

Almost surely, 2^120115656 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 120115656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167400000).

120115656 is an abundant number, since it is smaller than the sum of its proper divisors (214684344).

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

120115656 is a wasteful number, since it uses less digits than its factorization.

120115656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923 (or 1913 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 120115656 is about 10959.7288287621. The cubic root of 120115656 is about 493.4008263311.

Adding to 120115656 its reverse (656511021), we get a palindrome (776626677).

The spelling of 120115656 in words is "one hundred twenty million, one hundred fifteen thousand, six hundred fifty-six".