42421344443 has 4 divisors (see below), whose sum is σ = 42514170600. Its totient is φ = 42328518288.

The previous prime is 42421344431. The next prime is 42421344457. The reversal of 42421344443 is 34444312424.

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 42421344443 - 2¹² = 42421340347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42421344473) 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, 46412393 + ... + 46413306.

It is an arithmetic number, because the mean of its divisors is an integer number (10628542650).

Almost surely, 2^42421344443 is an apocalyptic number.

42421344443 is a deficient number, since it is larger than the sum of its proper divisors (92826157).

42421344443 is an equidigital number, since it uses as much as digits as its factorization.

42421344443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92826156.

The product of its digits is 147456, while the sum is 35.

Adding to 42421344443 its reverse (34444312424), we get a palindrome (76865656867).

The spelling of 42421344443 in words is "forty-two billion, four hundred twenty-one million, three hundred forty-four thousand, four hundred forty-three".