2120923 has 4 divisors (see below), whose sum is σ = 2423920. Its totient is φ = 1817928.

The previous prime is 2120917. The next prime is 2120933. The reversal of 2120923 is 3290212.

It is a happy number.

2120923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 2120923 - 2⁵ = 2120891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120923.

It is not an unprimeable number, because it can be changed into a prime (2120933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151488 + ... + 151501.

It is an arithmetic number, because the mean of its divisors is an integer number (605980).

2^2120923 is an apocalyptic number.

2120923 is a deficient number, since it is larger than the sum of its proper divisors (302997).

2120923 is an equidigital number, since it uses as much as digits as its factorization.

2120923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302996.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 2120923 is about 1456.3389028657. The cubic root of 2120923 is about 128.4818063842.

The spelling of 2120923 in words is "two million, one hundred twenty thousand, nine hundred twenty-three".