120320665 has 8 divisors (see below), whose sum is σ = 147742848. Its totient is φ = 94017840.

The previous prime is 120320657. The next prime is 120320687. The reversal of 120320665 is 566023021.

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

It is not a de Polignac number, because 120320665 - 2³ = 120320657 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, 279601 + ... + 280030.

It is an arithmetic number, because the mean of its divisors is an integer number (18467856).

Almost surely, 2^120320665 is an apocalyptic number.

It is an amenable number.

120320665 is a deficient number, since it is larger than the sum of its proper divisors (27422183).

120320665 is an equidigital number, since it uses as much as digits as its factorization.

120320665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559679.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 120320665 is about 10969.0776731683. The cubic root of 120320665 is about 493.6813729326.

Adding to 120320665 its reverse (566023021), we get a palindrome (686343686).

The spelling of 120320665 in words is "one hundred twenty million, three hundred twenty thousand, six hundred sixty-five".