42942923 has 2 divisors, whose sum is σ = 42942924. Its totient is φ = 42942922.

The previous prime is 42942883. The next prime is 42942941. The reversal of 42942923 is 32924924.

42942923 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 42942923 - 2²⁴ = 26165707 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (42942943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21471461 + 21471462.

It is an arithmetic number, because the mean of its divisors is an integer number (21471462).

Almost surely, 2^42942923 is an apocalyptic number.

42942923 is a deficient number, since it is larger than the sum of its proper divisors (1).

42942923 is an equidigital number, since it uses as much as digits as its factorization.

42942923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 42942923 is about 6553.0849986857. The cubic root of 42942923 is about 350.1847269753.

The spelling of 42942923 in words is "forty-two million, nine hundred forty-two thousand, nine hundred twenty-three".