42831782 has 32 divisors (see below), whose sum is σ = 77544000. Its totient is φ = 17715264.

The previous prime is 42831751. The next prime is 42831787. The reversal of 42831782 is 28713824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42831787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18818 + ... + 20970.

It is an arithmetic number, because the mean of its divisors is an integer number (2423250).

Almost surely, 2^42831782 is an apocalyptic number.

42831782 is a deficient number, since it is larger than the sum of its proper divisors (34712218).

42831782 is a wasteful number, since it uses less digits than its factorization.

42831782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205 (or 2191 counting only the distinct ones).

The product of its digits is 21504, while the sum is 35.

The square root of 42831782 is about 6544.5994529841. The cubic root of 42831782 is about 349.8823604643.

The spelling of 42831782 in words is "forty-two million, eight hundred thirty-one thousand, seven hundred eighty-two".