22420042345 has 4 divisors (see below), whose sum is σ = 26904050820. Its totient is φ = 17936033872.

The previous prime is 22420042321. The next prime is 22420042349. The reversal of 22420042345 is 54324002422.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13826937744 + 8593104601 = 117588^2 + 92699^2 .

It is a cyclic number.

It is not a de Polignac number, because 22420042345 - 2⁷ = 22420042217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22420042349) 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 3 ways as a sum of consecutive naturals, for example, 2242004230 + ... + 2242004239.

It is an arithmetic number, because the mean of its divisors is an integer number (6726012705).

Almost surely, 2^22420042345 is an apocalyptic number.

It is an amenable number.

22420042345 is a deficient number, since it is larger than the sum of its proper divisors (4484008475).

22420042345 is an equidigital number, since it uses as much as digits as its factorization.

22420042345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484008474.

The product of its (nonzero) digits is 15360, while the sum is 28.

Adding to 22420042345 its reverse (54324002422), we get a palindrome (76744044767).

The spelling of 22420042345 in words is "twenty-two billion, four hundred twenty million, forty-two thousand, three hundred forty-five".