42243320023 has 4 divisors (see below), whose sum is σ = 42935833528. Its totient is φ = 41550806520.

The previous prime is 42243320011. The next prime is 42243320051. The reversal of 42243320023 is 32002334224.

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-42243320023 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 42243320023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42243320123) 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, 346256661 + ... + 346256782.

It is an arithmetic number, because the mean of its divisors is an integer number (10733958382).

Almost surely, 2^42243320023 is an apocalyptic number.

42243320023 is a deficient number, since it is larger than the sum of its proper divisors (692513505).

42243320023 is an equidigital number, since it uses as much as digits as its factorization.

42243320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692513504.

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 42243320023 its reverse (32002334224), we get a palindrome (74245654247).

The spelling of 42243320023 in words is "forty-two billion, two hundred forty-three million, three hundred twenty thousand, twenty-three".