442204422 has 48 divisors (see below), whose sum is σ = 986736576. Its totient is φ = 131986800.

The previous prime is 442204403. The next prime is 442204471. The reversal of 442204422 is 224402244.

It is a junction number, because it is equal to n+sod(n) for n = 442204392 and 442204401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44097 + ... + 53187.

It is an arithmetic number, because the mean of its divisors is an integer number (20557012).

Almost surely, 2^442204422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 442204422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (493368288).

442204422 is an abundant number, since it is smaller than the sum of its proper divisors (544532154).

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

442204422 is a wasteful number, since it uses less digits than its factorization.

442204422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9185 (or 9174 counting only the distinct ones).

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

The square root of 442204422 is about 21028.6571611218. The cubic root of 442204422 is about 761.8585755821.

Adding to 442204422 its reverse (224402244), we get a palindrome (666606666).

The spelling of 442204422 in words is "four hundred forty-two million, two hundred four thousand, four hundred twenty-two".