320403242 has 8 divisors (see below), whose sum is σ = 481099716. Its totient is φ = 160036672.

The previous prime is 320403229. The next prime is 320403247. The reversal of 320403242 is 242304023.

It can be written as a sum of positive squares in 2 ways, for example, as 318658201 + 1745041 = 17851^2 + 1321^2 .

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

It is a super-2 number, since 2×320403242² = 205316474968221128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320403247) 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, 80033 + ... + 83940.

Almost surely, 2^320403242 is an apocalyptic number.

320403242 is a deficient number, since it is larger than the sum of its proper divisors (160696474).

320403242 is a wasteful number, since it uses less digits than its factorization.

320403242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164952.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 320403242 is about 17899.8112280549. The cubic root of 320403242 is about 684.2775639577.

Adding to 320403242 its reverse (242304023), we get a palindrome (562707265).

The spelling of 320403242 in words is "three hundred twenty million, four hundred three thousand, two hundred forty-two".