2120756039 has 4 divisors (see below), whose sum is σ = 2121445680. Its totient is φ = 2120066400.

The previous prime is 2120756017. The next prime is 2120756063. The reversal of 2120756039 is 9306570212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120756039 - 2⁸ = 2120755783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120750039) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 340187 + ... + 346364.

It is an arithmetic number, because the mean of its divisors is an integer number (530361420).

Almost surely, 2^2120756039 is an apocalyptic number.

2120756039 is a deficient number, since it is larger than the sum of its proper divisors (689641).

2120756039 is an equidigital number, since it uses as much as digits as its factorization.

2120756039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689640.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 2120756039 is about 46051.6670599447. The cubic root of 2120756039 is about 1284.7843489393.

The spelling of 2120756039 in words is "two billion, one hundred twenty million, seven hundred fifty-six thousand, thirty-nine".