42831856 has 20 divisors (see below), whose sum is σ = 83197800. Its totient is φ = 21361472.

The previous prime is 42831851. The next prime is 42831881. The reversal of 42831856 is 65813824.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42831851) 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, 3510 + ... + 9898.

It is an arithmetic number, because the mean of its divisors is an integer number (4159890).

Almost surely, 2^42831856 is an apocalyptic number.

It is an amenable number.

42831856 is a deficient number, since it is larger than the sum of its proper divisors (40365944).

42831856 is a wasteful number, since it uses less digits than its factorization.

42831856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6816 (or 6810 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 42831856 is about 6544.6051064980. The cubic root of 42831856 is about 349.8825619601.

The spelling of 42831856 in words is "forty-two million, eight hundred thirty-one thousand, eight hundred fifty-six".