120777156 has 30 divisors (see below), whose sum is σ = 315736190. Its totient is φ = 40258944.

The previous prime is 120777121. The next prime is 120777157. The reversal of 120777156 is 651777021.

It can be written as a sum of positive squares in only one way, i.e., 116640000 + 4137156 = 10800^2 + 2034^2 .

It is a super-2 number, since 2×120777156² = 29174242822896672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 120777156.

It is not an unprimeable number, because it can be changed into a prime (120777157) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 186061 + ... + 186708.

Almost surely, 2^120777156 is an apocalyptic number.

It is an amenable number.

120777156 is an abundant number, since it is smaller than the sum of its proper divisors (194959034).

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

120777156 is a wasteful number, since it uses less digits than its factorization.

120777156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372785 (or 372774 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

The square root of 120777156 is about 10989.8660592384. The cubic root of 120777156 is about 494.3049197402.

The spelling of 120777156 in words is "one hundred twenty million, seven hundred seventy-seven thousand, one hundred fifty-six".