42044432 has 80 divisors (see below), whose sum is σ = 90470400. Its totient is φ = 18869760.

The previous prime is 42044419. The next prime is 42044441. The reversal of 42044432 is 23444024.

It is a junction number, because it is equal to n+sod(n) for n = 42044398 and 42044407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 532169 + ... + 532247.

It is an arithmetic number, because the mean of its divisors is an integer number (1130880).

Almost surely, 2^42044432 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 42044432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45235200).

42044432 is an abundant number, since it is smaller than the sum of its proper divisors (48425968).

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

42044432 is a wasteful number, since it uses less digits than its factorization.

42044432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 42044432 is about 6484.1677954846. The cubic root of 42044432 is about 347.7251981272.

Adding to 42044432 its reverse (23444024), we get a palindrome (65488456).

The spelling of 42044432 in words is "forty-two million, forty-four thousand, four hundred thirty-two".