42839005 has 16 divisors (see below), whose sum is σ = 56530944. Its totient is φ = 30905280.

The previous prime is 42838987. The next prime is 42839011. The reversal of 42839005 is 50093824.

It is not a de Polignac number, because 42839005 - 2⁹ = 42838493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3919 + ... + 10051.

It is an arithmetic number, because the mean of its divisors is an integer number (3533184).

Almost surely, 2^42839005 is an apocalyptic number.

It is an amenable number.

42839005 is a deficient number, since it is larger than the sum of its proper divisors (13691939).

42839005 is a wasteful number, since it uses less digits than its factorization.

42839005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6276.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 42839005 is about 6545.1512587564. The cubic root of 42839005 is about 349.9020269994.

The spelling of 42839005 in words is "forty-two million, eight hundred thirty-nine thousand, five".