320004245421 has 12 divisors (see below), whose sum is σ = 528260976672. Its totient is φ = 182859568776.

The previous prime is 320004245399. The next prime is 320004245423. The reversal of 320004245421 is 124542400023.

320004245421 is a `hidden beast` number, since 3 + 200 + 0 + 4 + 2 + 454 + 2 + 1 = 666.

It is not a de Polignac number, because 320004245421 - 2¹⁰ = 320004244397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320004245423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2539716171 + ... + 2539716296.

It is an arithmetic number, because the mean of its divisors is an integer number (44021748056).

Almost surely, 2^320004245421 is an apocalyptic number.

It is an amenable number.

320004245421 is a deficient number, since it is larger than the sum of its proper divisors (208256731251).

320004245421 is a wasteful number, since it uses less digits than its factorization.

320004245421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5079432480 (or 5079432477 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 320004245421 its reverse (124542400023), we get a palindrome (444546645444).

The spelling of 320004245421 in words is "three hundred twenty billion, four million, two hundred forty-five thousand, four hundred twenty-one".