120655161 has 12 divisors (see below), whose sum is σ = 190123440. Its totient is φ = 73124280.

The previous prime is 120655153. The next prime is 120655181. The reversal of 120655161 is 161556021.

It is a happy number.

120655161 is a `hidden beast` number, since 1 + 2 + 0 + 655 + 1 + 6 + 1 = 666.

It is not a de Polignac number, because 120655161 - 2³ = 120655153 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (120655151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 609271 + ... + 609468.

It is an arithmetic number, because the mean of its divisors is an integer number (15843620).

Almost surely, 2^120655161 is an apocalyptic number.

120655161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120655161 is a deficient number, since it is larger than the sum of its proper divisors (69468279).

120655161 is a wasteful number, since it uses less digits than its factorization.

120655161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218756 (or 1218753 counting only the distinct ones).

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

The square root of 120655161 is about 10984.3143163331. The cubic root of 120655161 is about 494.1384339419.

The spelling of 120655161 in words is "one hundred twenty million, six hundred fifty-five thousand, one hundred sixty-one".