120155664 has 80 divisors (see below), whose sum is σ = 321086592. Its totient is φ = 38697984.

The previous prime is 120155663. The next prime is 120155741. The reversal of 120155664 is 466551021.

It is not an unprimeable number, because it can be changed into a prime (120155663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185389 + ... + 186035.

Almost surely, 2^120155664 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 120155664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (160543296).

120155664 is an abundant number, since it is smaller than the sum of its proper divisors (200930928).

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

120155664 is a wasteful number, since it uses less digits than its factorization.

120155664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 120155664 is about 10961.5539044426. The cubic root of 120155664 is about 493.4556007313.

It can be divided in two parts, 1201 and 55664, that added together give a palindrome (56865).

The spelling of 120155664 in words is "one hundred twenty million, one hundred fifty-five thousand, six hundred sixty-four".