1320544120 has 48 divisors (see below), whose sum is σ = 3456327240. Its totient is φ = 452757312.

The previous prime is 1320544117. The next prime is 1320544153. The reversal of 1320544120 is 214450231.

It is a junction number, because it is equal to n+sod(n) for n = 1320544091 and 1320544100.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 334914 + ... + 338833.

Almost surely, 2^1320544120 is an apocalyptic number.

1320544120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320544120 is an abundant number, since it is smaller than the sum of its proper divisors (2135783120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1320544120 is a wasteful number, since it uses less digits than its factorization.

1320544120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673772 (or 673761 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1320544120 is about 36339.2916826952. The cubic root of 1320544120 is about 1097.1120166970.

Adding to 1320544120 its reverse (214450231), we get a palindrome (1534994351).

The spelling of 1320544120 in words is "one billion, three hundred twenty million, five hundred forty-four thousand, one hundred twenty".