1320120339 has 32 divisors (see below), whose sum is σ = 1895097600. Its totient is φ = 815767680.

The previous prime is 1320120331. The next prime is 1320120341. The reversal of 1320120339 is 9330210231.

It is not a de Polignac number, because 1320120339 - 2³ = 1320120331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1320120331) 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, 217729 + ... + 223709.

It is an arithmetic number, because the mean of its divisors is an integer number (59221800).

Almost surely, 2^1320120339 is an apocalyptic number.

1320120339 is a deficient number, since it is larger than the sum of its proper divisors (574977261).

1320120339 is a wasteful number, since it uses less digits than its factorization.

1320120339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6115.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 1320120339 is about 36333.4603224080. The cubic root of 1320120339 is about 1096.9946446319.

The spelling of 1320120339 in words is "one billion, three hundred twenty million, one hundred twenty thousand, three hundred thirty-nine".