320042442 has 32 divisors (see below), whose sum is σ = 683759232. Its totient is φ = 99513344.

The previous prime is 320042431. The next prime is 320042449. The reversal of 320042442 is 244240023.

It is not an unprimeable number, because it can be changed into a prime (320042449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2358 + ... + 25409.

It is an arithmetic number, because the mean of its divisors is an integer number (21367476).

Almost surely, 2^320042442 is an apocalyptic number.

320042442 is an abundant number, since it is smaller than the sum of its proper divisors (363716790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320042442 is a wasteful number, since it uses less digits than its factorization.

320042442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27902.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 320042442 is about 17889.7300706299. The cubic root of 320042442 is about 684.0206168335.

Adding to 320042442 its reverse (244240023), we get a palindrome (564282465).

The spelling of 320042442 in words is "three hundred twenty million, forty-two thousand, four hundred forty-two".