120140155 has 8 divisors (see below), whose sum is σ = 150436512. Its totient is φ = 91933248.

The previous prime is 120140143. The next prime is 120140177. The reversal of 120140155 is 551041021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120140155 - 2¹¹ = 120138107 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522234 + ... + 522463.

It is an arithmetic number, because the mean of its divisors is an integer number (18804564).

Almost surely, 2^120140155 is an apocalyptic number.

120140155 is a deficient number, since it is larger than the sum of its proper divisors (30296357).

120140155 is a wasteful number, since it uses less digits than its factorization.

120140155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044725.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 120140155 is about 10960.8464545399. The cubic root of 120140155 is about 493.4343690169.

Adding to 120140155 its reverse (551041021), we get a palindrome (671181176).

It can be divided in two parts, 120140 and 155, that added together give a triangular number (120295 = T₄₉₀).

The spelling of 120140155 in words is "one hundred twenty million, one hundred forty thousand, one hundred fifty-five".