1320402044 has 24 divisors (see below), whose sum is σ = 2490109440. Its totient is φ = 609009984.

The previous prime is 1320402043. The next prime is 1320402047. The reversal of 1320402044 is 4402040231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320402043) 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 7 ways as a sum of consecutive naturals, for example, 78842 + ... + 94110.

It is an arithmetic number, because the mean of its divisors is an integer number (103754560).

Almost surely, 2^1320402044 is an apocalyptic number.

It is an amenable number.

1320402044 is a deficient number, since it is larger than the sum of its proper divisors (1169707396).

1320402044 is a wasteful number, since it uses less digits than its factorization.

1320402044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16949 (or 16947 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1320402044 is about 36337.3367763792. The cubic root of 1320402044 is about 1097.0726695635.

Adding to 1320402044 its reverse (4402040231), we get a palindrome (5722442275).

The spelling of 1320402044 in words is "one billion, three hundred twenty million, four hundred two thousand, forty-four".