2120947 has 2 divisors, whose sum is σ = 2120948. Its totient is φ = 2120946.

The previous prime is 2120941. The next prime is 2120957. The reversal of 2120947 is 7490212.

2120947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2120947 - 2⁷ = 2120819 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120941) 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, 1060473 + 1060474.

It is an arithmetic number, because the mean of its divisors is an integer number (1060474).

2^2120947 is an apocalyptic number.

2120947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120947 is an equidigital number, since it uses as much as digits as its factorization.

2120947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 2120947 is about 1456.3471426827. The cubic root of 2120947 is about 128.4822910084.

The spelling of 2120947 in words is "two million, one hundred twenty thousand, nine hundred forty-seven".