320402442 has 16 divisors (see below), whose sum is σ = 650369952. Its totient is φ = 105206640.

The previous prime is 320402441. The next prime is 320402461. The reversal of 320402442 is 244204023.

320402442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (320402441) 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, 398109 + ... + 398912.

It is an arithmetic number, because the mean of its divisors is an integer number (40648122).

Almost surely, 2^320402442 is an apocalyptic number.

320402442 is an abundant number, since it is smaller than the sum of its proper divisors (329967510).

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

320402442 is a wasteful number, since it uses less digits than its factorization.

320402442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797093.

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

The square root of 320402442 is about 17899.7888814366. The cubic root of 320402442 is about 684.2769944436.

Adding to 320402442 its reverse (244204023), we get a palindrome (564606465).

The spelling of 320402442 in words is "three hundred twenty million, four hundred two thousand, four hundred forty-two".