320104405421 has 4 divisors (see below), whose sum is σ = 324156360000. Its totient is φ = 316052450844.

The previous prime is 320104405417. The next prime is 320104405427. The reversal of 320104405421 is 124504401023.

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 320104405421 - 2² = 320104405417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320104405427) 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, 2025977171 + ... + 2025977328.

It is an arithmetic number, because the mean of its divisors is an integer number (81039090000).

Almost surely, 2^320104405421 is an apocalyptic number.

It is an amenable number.

320104405421 is a deficient number, since it is larger than the sum of its proper divisors (4051954579).

320104405421 is an equidigital number, since it uses as much as digits as its factorization.

320104405421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4051954578.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 320104405421 its reverse (124504401023), we get a palindrome (444608806444).

The spelling of 320104405421 in words is "three hundred twenty billion, one hundred four million, four hundred five thousand, four hundred twenty-one".