42831684 has 54 divisors (see below), whose sum is σ = 125950734. Its totient is φ = 12237120.

The previous prime is 42831671. The next prime is 42831703. The reversal of 42831684 is 48613824.

It can be written as a sum of positive squares in only one way, i.e., 42380100 + 451584 = 6510^2 + 672^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10377 + ... + 13904.

It is an arithmetic number, because the mean of its divisors is an integer number (2332421).

Almost surely, 2^42831684 is an apocalyptic number.

It is an amenable number.

42831684 is an abundant number, since it is smaller than the sum of its proper divisors (83119050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42831684 is a wasteful number, since it uses less digits than its factorization.

42831684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24305 (or 24293 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 42831684 is about 6544.5919658906. The cubic root of 42831684 is about 349.8820936180.

The spelling of 42831684 in words is "forty-two million, eight hundred thirty-one thousand, six hundred eighty-four".