42422420243 has 4 divisors (see below), whose sum is σ = 48482766000. Its totient is φ = 36362074488.

The previous prime is 42422420237. The next prime is 42422420269. The reversal of 42422420243 is 34202422424.

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

It is a cyclic number.

It is not a de Polignac number, because 42422420243 - 2⁸ = 42422419987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42422420273) 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, 3030172868 + ... + 3030172881.

It is an arithmetic number, because the mean of its divisors is an integer number (12120691500).

Almost surely, 2^42422420243 is an apocalyptic number.

42422420243 is a deficient number, since it is larger than the sum of its proper divisors (6060345757).

42422420243 is an equidigital number, since it uses as much as digits as its factorization.

42422420243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6060345756.

The product of its (nonzero) digits is 24576, while the sum is 29.

Adding to 42422420243 its reverse (34202422424), we get a palindrome (76624842667).

The spelling of 42422420243 in words is "forty-two billion, four hundred twenty-two million, four hundred twenty thousand, two hundred forty-three".