42422444422423 has 4 divisors (see below), whose sum is σ = 45685709378008. Its totient is φ = 39159179466840.

The previous prime is 42422444422411. The next prime is 42422444422433. The reversal of 42422444422423 is 32422444422424.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42422444422423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42422444422423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42422444422433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631632477773 + ... + 1631632477798.

It is an arithmetic number, because the mean of its divisors is an integer number (11421427344502).

Almost surely, 2^{42422444422423} is an apocalyptic number.

42422444422423 is a deficient number, since it is larger than the sum of its proper divisors (3263264955585).

42422444422423 is a wasteful number, since it uses less digits than its factorization.

42422444422423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3263264955584.

The product of its digits is 3145728, while the sum is 43.

Adding to 42422444422423 its reverse (32422444422424), we get a palindrome (74844888844847).

Subtracting from 42422444422423 its reverse (32422444422424), we obtain a palindrome (9999999999999).

The spelling of 42422444422423 in words is "forty-two trillion, four hundred twenty-two billion, four hundred forty-four million, four hundred twenty-two thousand, four hundred twenty-three".