320242445 has 8 divisors (see below), whose sum is σ = 385544544. Its totient is φ = 255358224.

The previous prime is 320242441. The next prime is 320242453. The reversal of 320242445 is 544242023.

It is a happy number.

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 320242445 - 2² = 320242441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320242441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102779 + ... + 105848.

It is an arithmetic number, because the mean of its divisors is an integer number (48193068).

Almost surely, 2^320242445 is an apocalyptic number.

It is an amenable number.

320242445 is a deficient number, since it is larger than the sum of its proper divisors (65302099).

320242445 is a wasteful number, since it uses less digits than its factorization.

320242445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208939.

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 320242445 is about 17895.3190806982. The cubic root of 320242445 is about 684.1630746968.

Adding to 320242445 its reverse (544242023), we get a palindrome (864484468).

The spelling of 320242445 in words is "three hundred twenty million, two hundred forty-two thousand, four hundred forty-five".