320542441 has 4 divisors (see below), whose sum is σ = 320649300. Its totient is φ = 320435584.

The previous prime is 320542381. The next prime is 320542451. The reversal of 320542441 is 144245023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144245023 = 13 ⋅11095771.

It can be written as a sum of positive squares in 2 ways, for example, as 299428416 + 21114025 = 17304^2 + 4595^2 .

It is a cyclic number.

It is not a de Polignac number, because 320542441 - 2¹⁷ = 320411369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320542451) 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, 48796 + ... + 54973.

It is an arithmetic number, because the mean of its divisors is an integer number (80162325).

Almost surely, 2^320542441 is an apocalyptic number.

It is an amenable number.

320542441 is a deficient number, since it is larger than the sum of its proper divisors (106859).

320542441 is a wasteful number, since it uses less digits than its factorization.

320542441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106858.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 320542441 is about 17903.6990870602. The cubic root of 320542441 is about 684.3766442723.

Adding to 320542441 its reverse (144245023), we get a palindrome (464787464).

The spelling of 320542441 in words is "three hundred twenty million, five hundred forty-two thousand, four hundred forty-one".