42320240641 has 4 divisors (see below), whose sum is σ = 48365989312. Its totient is φ = 36274491972.

The previous prime is 42320240621. The next prime is 42320240663. The reversal of 42320240641 is 14604202324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42320240641 - 2⁵ = 42320240609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42320240621) 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, 3022874325 + ... + 3022874338.

It is an arithmetic number, because the mean of its divisors is an integer number (12091497328).

Almost surely, 2^42320240641 is an apocalyptic number.

It is an amenable number.

42320240641 is a deficient number, since it is larger than the sum of its proper divisors (6045748671).

42320240641 is an equidigital number, since it uses as much as digits as its factorization.

42320240641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6045748670.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 42320240641 its reverse (14604202324), we get a palindrome (56924442965).

The spelling of 42320240641 in words is "forty-two billion, three hundred twenty million, two hundred forty thousand, six hundred forty-one".