42224442 has 16 divisors (see below), whose sum is σ = 90945120. Its totient is φ = 12992112.

The previous prime is 42224423. The next prime is 42224453. The reversal of 42224442 is 24442224.

It is a super-2 number, since 2×42224442² = 3565807004422728, which contains 22 as substring.

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, 270592 + ... + 270747.

It is an arithmetic number, because the mean of its divisors is an integer number (5684070).

Almost surely, 2^42224442 is an apocalyptic number.

42224442 is an abundant number, since it is smaller than the sum of its proper divisors (48720678).

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

42224442 is a wasteful number, since it uses less digits than its factorization.

42224442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541357.

The product of its digits is 4096, while the sum is 24.

The square root of 42224442 is about 6498.0337025903. The cubic root of 42224442 is about 348.2207444760.

Adding to 42224442 its reverse (24442224), we get a palindrome (66666666).

The spelling of 42224442 in words is "forty-two million, two hundred twenty-four thousand, four hundred forty-two".