42718579 has 2 divisors, whose sum is σ = 42718580. Its totient is φ = 42718578.

The previous prime is 42718561. The next prime is 42718639. The reversal of 42718579 is 97581724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42718579 - 2⁵ = 42718547 is a prime.

It is not a weakly prime, because it can be changed into another prime (42718519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21359289 + 21359290.

It is an arithmetic number, because the mean of its divisors is an integer number (21359290).

Almost surely, 2^42718579 is an apocalyptic number.

42718579 is a deficient number, since it is larger than the sum of its proper divisors (1).

42718579 is an equidigital number, since it uses as much as digits as its factorization.

42718579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 43.

The square root of 42718579 is about 6535.9451497086. The cubic root of 42718579 is about 349.5738459585.

The spelling of 42718579 in words is "forty-two million, seven hundred eighteen thousand, five hundred seventy-nine".