120155655 has 16 divisors (see below), whose sum is σ = 192430080. Its totient is φ = 64022688.

The previous prime is 120155653. The next prime is 120155663. The reversal of 120155655 is 556551021.

It is not a de Polignac number, because 120155655 - 2¹ = 120155653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120155653) 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, 16054 + ... + 22316.

It is an arithmetic number, because the mean of its divisors is an integer number (12026880).

Almost surely, 2^120155655 is an apocalyptic number.

120155655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120155655 is a deficient number, since it is larger than the sum of its proper divisors (72274425).

120155655 is a wasteful number, since it uses less digits than its factorization.

120155655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7550.

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

The square root of 120155655 is about 10961.5534939168. The cubic root of 120155655 is about 493.4555884109.

The spelling of 120155655 in words is "one hundred twenty million, one hundred fifty-five thousand, six hundred fifty-five".