1320120652 has 24 divisors (see below), whose sum is σ = 2477079360. Its totient is φ = 613367040.

The previous prime is 1320120643. The next prime is 1320120749. The reversal of 1320120652 is 2560210231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117499 + ... + 128242.

It is an arithmetic number, because the mean of its divisors is an integer number (103211640).

Almost surely, 2^1320120652 is an apocalyptic number.

It is an amenable number.

1320120652 is a deficient number, since it is larger than the sum of its proper divisors (1156958708).

1320120652 is a wasteful number, since it uses less digits than its factorization.

1320120652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245841 (or 245839 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1320120652 is about 36333.4646297322. The cubic root of 1320120652 is about 1096.9947313309.

Adding to 1320120652 its reverse (2560210231), we get a palindrome (3880330883).

The spelling of 1320120652 in words is "one billion, three hundred twenty million, one hundred twenty thousand, six hundred fifty-two".