22120454742 has 16 divisors (see below), whose sum is σ = 44430787440. Its totient is φ = 7341838592.

The previous prime is 22120454737. The next prime is 22120454753. The reversal of 22120454742 is 24745402122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7910067 + ... + 7912862.

It is an arithmetic number, because the mean of its divisors is an integer number (2776924215).

Almost surely, 2^22120454742 is an apocalyptic number.

22120454742 is an abundant number, since it is smaller than the sum of its proper divisors (22310332698).

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

22120454742 is a wasteful number, since it uses less digits than its factorization.

22120454742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15823167.

The product of its (nonzero) digits is 35840, while the sum is 33.

Adding to 22120454742 its reverse (24745402122), we get a palindrome (46865856864).

The spelling of 22120454742 in words is "twenty-two billion, one hundred twenty million, four hundred fifty-four thousand, seven hundred forty-two".