42231444 has 12 divisors (see below), whose sum is σ = 98540064. Its totient is φ = 14077144.

The previous prime is 42231403. The next prime is 42231491. The reversal of 42231444 is 44413224.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1759632 + ... + 1759655.

It is an arithmetic number, because the mean of its divisors is an integer number (8211672).

Almost surely, 2^42231444 is an apocalyptic number.

It is an amenable number.

42231444 is an abundant number, since it is smaller than the sum of its proper divisors (56308620).

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

42231444 is a wasteful number, since it uses less digits than its factorization.

42231444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519294 (or 3519292 counting only the distinct ones).

The product of its digits is 3072, while the sum is 24.

The square root of 42231444 is about 6498.5724586250. The cubic root of 42231444 is about 348.2399916764.

Adding to 42231444 its reverse (44413224), we get a palindrome (86644668).

The spelling of 42231444 in words is "forty-two million, two hundred thirty-one thousand, four hundred forty-four".