42839331 has 8 divisors (see below), whose sum is σ = 57971904. Its totient is φ = 28133160.

The previous prime is 42839299. The next prime is 42839333. The reversal of 42839331 is 13393824.

It is a happy number.

42839331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42839331 - 2⁵ = 42839299 is a prime.

It is a super-2 number, since 2×42839331² = 3670416561055122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42839292 and 42839301.

It is not an unprimeable number, because it can be changed into a prime (42839333) 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 in 7 ways as a sum of consecutive naturals, for example, 106365 + ... + 106766.

It is an arithmetic number, because the mean of its divisors is an integer number (7246488).

Almost surely, 2^42839331 is an apocalyptic number.

42839331 is a deficient number, since it is larger than the sum of its proper divisors (15132573).

42839331 is a wasteful number, since it uses less digits than its factorization.

42839331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213201.

The product of its digits is 15552, while the sum is 33.

The square root of 42839331 is about 6545.1761626407. The cubic root of 42839331 is about 349.9029145689.

The spelling of 42839331 in words is "forty-two million, eight hundred thirty-nine thousand, three hundred thirty-one".