120655155 has 16 divisors (see below), whose sum is σ = 193400064. Its totient is φ = 64232160.

The previous prime is 120655153. The next prime is 120655181. The reversal of 120655155 is 551556021.

It is not a de Polignac number, because 120655155 - 2¹ = 120655153 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 1522 + ... + 15608.

It is an arithmetic number, because the mean of its divisors is an integer number (12087504).

Almost surely, 2^120655155 is an apocalyptic number.

120655155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120655155 is a deficient number, since it is larger than the sum of its proper divisors (72744909).

120655155 is a wasteful number, since it uses less digits than its factorization.

120655155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14666.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 120655155 is about 10984.3140432164. The cubic root of 120655155 is about 494.1384257510.

The spelling of 120655155 in words is "one hundred twenty million, six hundred fifty-five thousand, one hundred fifty-five".