42442043023 has 4 divisors (see below), whose sum is σ = 42442534840. Its totient is φ = 42441551208.

The previous prime is 42442042933. The next prime is 42442043027. The reversal of 42442043023 is 32034024424.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42442043023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42442042982 and 42442043000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42442043027) 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, 78453 + ... + 301726.

It is an arithmetic number, because the mean of its divisors is an integer number (10610633710).

Almost surely, 2^42442043023 is an apocalyptic number.

42442043023 is a deficient number, since it is larger than the sum of its proper divisors (491817).

42442043023 is a wasteful number, since it uses less digits than its factorization.

42442043023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491816.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 42442043023 its reverse (32034024424), we get a palindrome (74476067447).

The spelling of 42442043023 in words is "forty-two billion, four hundred forty-two million, forty-three thousand, twenty-three".