2120779 has 2 divisors, whose sum is σ = 2120780. Its totient is φ = 2120778.

The previous prime is 2120771. The next prime is 2120819. The reversal of 2120779 is 9770212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120779 - 2³ = 2120771 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060389 + 1060390.

It is an arithmetic number, because the mean of its divisors is an integer number (1060390).

2^2120779 is an apocalyptic number.

2120779 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120779 is an equidigital number, since it uses as much as digits as its factorization.

2120779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 2120779 is about 1456.2894629846. The cubic root of 2120779 is about 128.4788985623.

The spelling of 2120779 in words is "two million, one hundred twenty thousand, seven hundred seventy-nine".