42221242 has 16 divisors (see below), whose sum is σ = 73857600. Its totient is φ = 18094524.

The previous prime is 42221239. The next prime is 42221243. The reversal of 42221242 is 24212224.

42221242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (42221243) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 30088 + ... + 31459.

It is an arithmetic number, because the mean of its divisors is an integer number (4616100).

Almost surely, 2^42221242 is an apocalyptic number.

42221242 is a deficient number, since it is larger than the sum of its proper divisors (31636358).

42221242 is an equidigital number, since it uses as much as digits as its factorization.

42221242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61570 (or 61556 counting only the distinct ones).

The product of its digits is 512, while the sum is 19.

The square root of 42221242 is about 6497.7874695930. The cubic root of 42221242 is about 348.2119475606.

Adding to 42221242 its reverse (24212224), we get a palindrome (66433466).

The spelling of 42221242 in words is "forty-two million, two hundred twenty-one thousand, two hundred forty-two".