22423345442 has 4 divisors (see below), whose sum is σ = 33635018166. Its totient is φ = 11211672720.

The previous prime is 22423345433. The next prime is 22423345453. The reversal of 22423345442 is 24454332422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19988021641 + 2435323801 = 141379^2 + 49349^2 .

It is a super-2 number, since 2×22423345442² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5605836359 + ... + 5605836362.

Almost surely, 2^22423345442 is an apocalyptic number.

22423345442 is a deficient number, since it is larger than the sum of its proper divisors (11211672724).

22423345442 is a wasteful number, since it uses less digits than its factorization.

22423345442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11211672723.

The product of its digits is 184320, while the sum is 35.

Adding to 22423345442 its reverse (24454332422), we get a palindrome (46877677864).

The spelling of 22423345442 in words is "twenty-two billion, four hundred twenty-three million, three hundred forty-five thousand, four hundred forty-two".