42865079 has 2 divisors, whose sum is σ = 42865080. Its totient is φ = 42865078.

The previous prime is 42865063. The next prime is 42865087. The reversal of 42865079 is 97056824.

42865079 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 42865079 - 2⁴ = 42865063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42865099) 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, 21432539 + 21432540.

It is an arithmetic number, because the mean of its divisors is an integer number (21432540).

Almost surely, 2^42865079 is an apocalyptic number.

42865079 is a deficient number, since it is larger than the sum of its proper divisors (1).

42865079 is an equidigital number, since it uses as much as digits as its factorization.

42865079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 42865079 is about 6547.1428119448. The cubic root of 42865079 is about 349.9730019991.

The spelling of 42865079 in words is "forty-two million, eight hundred sixty-five thousand, seventy-nine".