120161055 has 32 divisors (see below), whose sum is σ = 221760000. Its totient is φ = 54421632.

The previous prime is 120161051. The next prime is 120161059. The reversal of 120161055 is 550161021.

It is an interprime number because it is at equal distance from previous prime (120161051) and next prime (120161059).

It is not a de Polignac number, because 120161055 - 2² = 120161051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120161051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6196 + ... + 16694.

It is an arithmetic number, because the mean of its divisors is an integer number (6930000).

Almost surely, 2^120161055 is an apocalyptic number.

120161055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120161055 is a deficient number, since it is larger than the sum of its proper divisors (101598945).

120161055 is a wasteful number, since it uses less digits than its factorization.

120161055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10623.

The product of its (nonzero) digits is 300, while the sum is 21.

The square root of 120161055 is about 10961.7998066011. The cubic root of 120161055 is about 493.4629805453.

The spelling of 120161055 in words is "one hundred twenty million, one hundred sixty-one thousand, fifty-five".