320042352 has 40 divisors (see below), whose sum is σ = 944887936. Its totient is φ = 91440576.

The previous prime is 320042339. The next prime is 320042353. The reversal of 320042352 is 253240023.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320042353) 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, 475918 + ... + 476589.

Almost surely, 2^320042352 is an apocalyptic number.

It is an amenable number.

320042352 is an abundant number, since it is smaller than the sum of its proper divisors (624845584).

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

320042352 is a wasteful number, since it uses less digits than its factorization.

320042352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952525 (or 952519 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 320042352 is about 17889.7275552201. The cubic root of 320042352 is about 684.0205527151.

Adding to 320042352 its reverse (253240023), we get a palindrome (573282375).

The spelling of 320042352 in words is "three hundred twenty million, forty-two thousand, three hundred fifty-two".