442420022 has 16 divisors (see below), whose sum is σ = 724323600. Its totient is φ = 200999040.

The previous prime is 442420021. The next prime is 442420037. The reversal of 442420022 is 220024244.

It is a junction number, because it is equal to n+sod(n) for n = 442419976 and 442420003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442420021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56354 + ... + 63722.

It is an arithmetic number, because the mean of its divisors is an integer number (45270225).

Almost surely, 2^442420022 is an apocalyptic number.

442420022 is a deficient number, since it is larger than the sum of its proper divisors (281903578).

442420022 is a wasteful number, since it uses less digits than its factorization.

442420022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10111.

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 442420022 is about 21033.7828742240. The cubic root of 442420022 is about 761.9823720384.

Adding to 442420022 its reverse (220024244), we get a palindrome (662444266).

The spelling of 442420022 in words is "four hundred forty-two million, four hundred twenty thousand, twenty-two".