120131155 has 4 divisors (see below), whose sum is σ = 144157392. Its totient is φ = 96104920.

The previous prime is 120131111. The next prime is 120131159. The reversal of 120131155 is 551131021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 120131155 - 2⁹ = 120130643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120131159) 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 3 ways as a sum of consecutive naturals, for example, 12013111 + ... + 12013120.

It is an arithmetic number, because the mean of its divisors is an integer number (36039348).

Almost surely, 2^120131155 is an apocalyptic number.

120131155 is a deficient number, since it is larger than the sum of its proper divisors (24026237).

120131155 is an equidigital number, since it uses as much as digits as its factorization.

120131155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24026236.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 120131155 is about 10960.4358946166. The cubic root of 120131155 is about 493.4220472410.

Adding to 120131155 its reverse (551131021), we get a palindrome (671262176).

The spelling of 120131155 in words is "one hundred twenty million, one hundred thirty-one thousand, one hundred fifty-five".