1320505039 has 16 divisors (see below), whose sum is σ = 1599870528. Its totient is φ = 1063982592.

The previous prime is 1320505031. The next prime is 1320505063. The reversal of 1320505039 is 9305050231.

It is a cyclic number.

It is not a de Polignac number, because 1320505039 - 2³ = 1320505031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320504998 and 1320505016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320505031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98037 + ... + 110689.

It is an arithmetic number, because the mean of its divisors is an integer number (99991908).

Almost surely, 2^1320505039 is an apocalyptic number.

1320505039 is a deficient number, since it is larger than the sum of its proper divisors (279365489).

1320505039 is a wasteful number, since it uses less digits than its factorization.

1320505039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13554.

The product of its (nonzero) digits is 4050, while the sum is 28.

The square root of 1320505039 is about 36338.7539549721. The cubic root of 1320505039 is about 1097.1011937196.

The spelling of 1320505039 in words is "one billion, three hundred twenty million, five hundred five thousand, thirty-nine".