320421441 has 8 divisors (see below), whose sum is σ = 445803840. Its totient is φ = 204326672.

The previous prime is 320421433. The next prime is 320421463. The reversal of 320421441 is 144124023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320421441 - 2³ = 320421433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320421481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2321826 + ... + 2321963.

It is an arithmetic number, because the mean of its divisors is an integer number (55725480).

Almost surely, 2^320421441 is an apocalyptic number.

It is an amenable number.

320421441 is a deficient number, since it is larger than the sum of its proper divisors (125382399).

320421441 is a wasteful number, since it uses less digits than its factorization.

320421441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643815.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 320421441 is about 17900.3195781528. The cubic root of 320421441 is about 684.2905194358.

Adding to 320421441 its reverse (144124023), we get a palindrome (464545464).

The spelling of 320421441 in words is "three hundred twenty million, four hundred twenty-one thousand, four hundred forty-one".