320043042 has 64 divisors (see below), whose sum is σ = 783544320. Its totient is φ = 96022800.

The previous prime is 320043029. The next prime is 320043047. The reversal of 320043042 is 240340023.

It is a super-2 number, since 2×320043042² = 204855097465227528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (320043047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58567 + ... + 63797.

It is an arithmetic number, because the mean of its divisors is an integer number (12242880).

Almost surely, 2^320043042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320043042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391772160).

320043042 is an abundant number, since it is smaller than the sum of its proper divisors (463501278).

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

320043042 is a wasteful number, since it uses less digits than its factorization.

320043042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356 (or 5350 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 320043042 is about 17889.7468400198. The cubic root of 320043042 is about 684.0210442894.

Adding to 320043042 its reverse (240340023), we get a palindrome (560383065).

The spelling of 320043042 in words is "three hundred twenty million, forty-three thousand, forty-two".