42831740 has 48 divisors (see below), whose sum is σ = 103384512. Its totient is φ = 14601216.

The previous prime is 42831713. The next prime is 42831751. The reversal of 42831740 is 4713824.

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, 26804 + ... + 28356.

It is an arithmetic number, because the mean of its divisors is an integer number (2153844).

Almost surely, 2^42831740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42831740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51692256).

42831740 is an abundant number, since it is smaller than the sum of its proper divisors (60552772).

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

42831740 is a wasteful number, since it uses less digits than its factorization.

42831740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766 (or 1764 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 42831740 is about 6544.5962442308. The cubic root of 42831740 is about 349.8822461016.

The spelling of 42831740 in words is "forty-two million, eight hundred thirty-one thousand, seven hundred forty".