42239982 has 8 divisors (see below), whose sum is σ = 84479976. Its totient is φ = 14079992.

The previous prime is 42239971. The next prime is 42240013. The reversal of 42239982 is 28993224.

It is a happy number.

42239982 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.

42239982 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 42239982.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3519993 + ... + 3520004.

It is an arithmetic number, because the mean of its divisors is an integer number (10559997).

Almost surely, 2^42239982 is an apocalyptic number.

42239982 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

42239982 is a wasteful number, since it uses less digits than its factorization.

42239982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7040002.

The product of its digits is 62208, while the sum is 39.

The square root of 42239982 is about 6499.2293389293. The cubic root of 42239982 is about 348.2634581777.

It can be divided in two parts, 422 and 39982, that added together give a palindrome (40404).

The spelling of 42239982 in words is "forty-two million, two hundred thirty-nine thousand, nine hundred eighty-two".