120320115 has 32 divisors (see below), whose sum is σ = 198567936. Its totient is φ = 62167680.

The previous prime is 120320111. The next prime is 120320173. The reversal of 120320115 is 511023021.

It is not a de Polignac number, because 120320115 - 2² = 120320111 is a prime.

It is a super-2 number, since 2×120320115² = 28953860147226450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 120320094 and 120320103.

It is not an unprimeable number, because it can be changed into a prime (120320111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238954 + ... + 239456.

It is an arithmetic number, because the mean of its divisors is an integer number (6205248).

Almost surely, 2^120320115 is an apocalyptic number.

120320115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120320115 is a deficient number, since it is larger than the sum of its proper divisors (78247821).

120320115 is a wasteful number, since it uses less digits than its factorization.

120320115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 120320115 is about 10969.0526026635. The cubic root of 120320115 is about 493.6806207061.

Adding to 120320115 its reverse (511023021), we get a palindrome (631343136).

The spelling of 120320115 in words is "one hundred twenty million, three hundred twenty thousand, one hundred fifteen".