2120862305 has 4 divisors (see below), whose sum is σ = 2545034772. Its totient is φ = 1696689840.

The previous prime is 2120862277. The next prime is 2120862349. The reversal of 2120862305 is 5032680212.

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

It can be written as a sum of positive squares in 2 ways, for example, as 456548689 + 1664313616 = 21367^2 + 40796^2 .

It is not a de Polignac number, because 2120862305 - 2¹⁴ = 2120845921 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 212086226 + ... + 212086235.

It is an arithmetic number, because the mean of its divisors is an integer number (636258693).

Almost surely, 2^2120862305 is an apocalyptic number.

It is an amenable number.

2120862305 is a deficient number, since it is larger than the sum of its proper divisors (424172467).

2120862305 is an equidigital number, since it uses as much as digits as its factorization.

2120862305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424172466.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2120862305 is about 46052.8208147992. The cubic root of 2120862305 is about 1284.8058077352.

The spelling of 2120862305 in words is "two billion, one hundred twenty million, eight hundred sixty-two thousand, three hundred five".