120515381 has 8 divisors (see below), whose sum is σ = 137924160. Its totient is φ = 103154688.

The previous prime is 120515371. The next prime is 120515389. The reversal of 120515381 is 183515021.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-120515381 is a prime.

It is a super-2 number, since 2×120515381² = 29047914115150322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120515381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120515389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6476 + ... + 16821.

It is an arithmetic number, because the mean of its divisors is an integer number (17240520).

Almost surely, 2^120515381 is an apocalyptic number.

It is an amenable number.

120515381 is a deficient number, since it is larger than the sum of its proper divisors (17408779).

120515381 is an equidigital number, since it uses as much as digits as its factorization.

120515381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24043.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 120515381 is about 10977.9497630477. The cubic root of 120515381 is about 493.9475390536.

The spelling of 120515381 in words is "one hundred twenty million, five hundred fifteen thousand, three hundred eighty-one".