42718839 has 8 divisors (see below), whose sum is σ = 57054720. Its totient is φ = 28431096.

The previous prime is 42718829. The next prime is 42718847. The reversal of 42718839 is 93881724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42718839 - 2¹⁵ = 42686071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42718839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42718829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9909 + ... + 13550.

It is an arithmetic number, because the mean of its divisors is an integer number (7131840).

Almost surely, 2^42718839 is an apocalyptic number.

42718839 is a deficient number, since it is larger than the sum of its proper divisors (14335881).

42718839 is a wasteful number, since it uses less digits than its factorization.

42718839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24069.

The product of its digits is 96768, while the sum is 42.

The square root of 42718839 is about 6535.9650396862. The cubic root of 42718839 is about 349.5745551661.

The spelling of 42718839 in words is "forty-two million, seven hundred eighteen thousand, eight hundred thirty-nine".