2120345206 has 24 divisors (see below), whose sum is σ = 3799800144. Its totient is φ = 869206800.

The previous prime is 2120345203. The next prime is 2120345231. The reversal of 2120345206 is 6025430212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120345203) by changing a digit.

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, 135745 + ... + 150556.

It is an arithmetic number, because the mean of its divisors is an integer number (158325006).

Almost surely, 2^2120345206 is an apocalyptic number.

2120345206 is a deficient number, since it is larger than the sum of its proper divisors (1679454938).

2120345206 is a wasteful number, since it uses less digits than its factorization.

2120345206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286356 (or 286333 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2120345206 is about 46047.2062779057. The cubic root of 2120345206 is about 1284.7013807452.

Adding to 2120345206 its reverse (6025430212), we get a palindrome (8145775418).

The spelling of 2120345206 in words is "two billion, one hundred twenty million, three hundred forty-five thousand, two hundred six".