42905044079 has 2 divisors, whose sum is σ = 42905044080. Its totient is φ = 42905044078.

The previous prime is 42905044001. The next prime is 42905044081. The reversal of 42905044079 is 97044050924.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42905044079 is a prime.

It is a Sophie Germain prime.

Together with 42905044081, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42905044099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21452522039 + 21452522040.

It is an arithmetic number, because the mean of its divisors is an integer number (21452522040).

Almost surely, 2^42905044079 is an apocalyptic number.

42905044079 is a deficient number, since it is larger than the sum of its proper divisors (1).

42905044079 is an equidigital number, since it uses as much as digits as its factorization.

42905044079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 42905044079 in words is "forty-two billion, nine hundred five million, forty-four thousand, seventy-nine".