42442244 has 24 divisors (see below), whose sum is σ = 80420760. Its totient is φ = 19482624.

The previous prime is 42442237. The next prime is 42442259. The reversal of 42442244 is 44224424.

It can be written as a sum of positive squares in 4 ways, for example, as 7182400 + 35259844 = 2680^2 + 5938^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7922 + ... + 12150.

It is an arithmetic number, because the mean of its divisors is an integer number (3350865).

Almost surely, 2^42442244 is an apocalyptic number.

It is an amenable number.

42442244 is a deficient number, since it is larger than the sum of its proper divisors (37978516).

42442244 is a wasteful number, since it uses less digits than its factorization.

42442244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4439 (or 4437 counting only the distinct ones).

The product of its digits is 8192, while the sum is 26.

The square root of 42442244 is about 6514.7712162439. The cubic root of 42442244 is about 348.8184483867.

Adding to 42442244 its reverse (44224424), we get a palindrome (86666668).

The spelling of 42442244 in words is "forty-two million, four hundred forty-two thousand, two hundred forty-four".