2120323775 has 12 divisors (see below), whose sum is σ = 2630430600. Its totient is φ = 1695466080.

The previous prime is 2120323757. The next prime is 2120323781. The reversal of 2120323775 is 5773230212.

It is a de Polignac number, because none of the positive numbers 2^k-2120323775 is a prime.

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, 38036 + ... + 75414.

It is an arithmetic number, because the mean of its divisors is an integer number (219202550).

Almost surely, 2^2120323775 is an apocalyptic number.

2120323775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2120323775 is a deficient number, since it is larger than the sum of its proper divisors (510106825).

2120323775 is a wasteful number, since it uses less digits than its factorization.

2120323775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39658 (or 39653 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 2120323775 is about 46046.9735704747. The cubic root of 2120323775 is about 1284.6970524361.

Adding to 2120323775 its reverse (5773230212), we get a palindrome (7893553987).

The spelling of 2120323775 in words is "two billion, one hundred twenty million, three hundred twenty-three thousand, seven hundred seventy-five".