2120879 has 2 divisors, whose sum is σ = 2120880. Its totient is φ = 2120878.

The previous prime is 2120863. The next prime is 2120887. The reversal of 2120879 is 9780212.

It is a happy number.

2120879 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2120879 - 2⁴ = 2120863 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2120819) 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 as a sum of consecutive naturals, namely, 1060439 + 1060440.

It is an arithmetic number, because the mean of its divisors is an integer number (1060440).

2^2120879 is an apocalyptic number.

2120879 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120879 is an equidigital number, since it uses as much as digits as its factorization.

2120879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 2120879 is about 1456.3237964134. The cubic root of 2120879 is about 128.4809178970.

The spelling of 2120879 in words is "two million, one hundred twenty thousand, eight hundred seventy-nine".