42593839 has 4 divisors (see below), whose sum is σ = 44835640. Its totient is φ = 40352040.

The previous prime is 42593827. The next prime is 42593849. The reversal of 42593839 is 93839524.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42593839 - 2⁵ = 42593807 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42593795 and 42593804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42593849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1120872 + ... + 1120909.

It is an arithmetic number, because the mean of its divisors is an integer number (11208910).

Almost surely, 2^42593839 is an apocalyptic number.

42593839 is a deficient number, since it is larger than the sum of its proper divisors (2241801).

42593839 is a wasteful number, since it uses less digits than its factorization.

42593839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2241800.

The product of its digits is 233280, while the sum is 43.

The square root of 42593839 is about 6526.3955595719. The cubic root of 42593839 is about 349.2332575840.

The spelling of 42593839 in words is "forty-two million, five hundred ninety-three thousand, eight hundred thirty-nine".