1320120837 has 24 divisors (see below), whose sum is σ = 2190329856. Its totient is φ = 750518496.

The previous prime is 1320120799. The next prime is 1320120847. The reversal of 1320120837 is 7380210231.

1320120837 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1320120837 - 2¹⁴ = 1320104453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1320120837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320120847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40773 + ... + 65594.

It is an arithmetic number, because the mean of its divisors is an integer number (91263744).

Almost surely, 2^1320120837 is an apocalyptic number.

It is an amenable number.

1320120837 is a deficient number, since it is larger than the sum of its proper divisors (870209019).

1320120837 is a wasteful number, since it uses less digits than its factorization.

1320120837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106577 (or 106574 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 1320120837 is about 36333.4671755945. The cubic root of 1320120837 is about 1096.9947825747.

The spelling of 1320120837 in words is "one billion, three hundred twenty million, one hundred twenty thousand, eight hundred thirty-seven".