22442320242 has 80 divisors (see below), whose sum is σ = 52591207680. Its totient is φ = 7139518848.

The previous prime is 22442320213. The next prime is 22442320259. The reversal of 22442320242 is 24202324422.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 1718634 + ... + 1731642.

It is an arithmetic number, because the mean of its divisors is an integer number (657390096).

Almost surely, 2^22442320242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22442320242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26295603840).

22442320242 is an abundant number, since it is smaller than the sum of its proper divisors (30148887438).

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

22442320242 is a wasteful number, since it uses less digits than its factorization.

22442320242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13509 (or 13500 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 22442320242 its reverse (24202324422), we get a palindrome (46644644664).

The spelling of 22442320242 in words is "twenty-two billion, four hundred forty-two million, three hundred twenty thousand, two hundred forty-two".