320545442 has 16 divisors (see below), whose sum is σ = 549942912. Its totient is φ = 137267520.

The previous prime is 320545441. The next prime is 320545469. The reversal of 320545442 is 244545023.

It is not an unprimeable number, because it can be changed into a prime (320545441) 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, 10643 + ... + 27465.

It is an arithmetic number, because the mean of its divisors is an integer number (34371432).

Almost surely, 2^320545442 is an apocalyptic number.

320545442 is a deficient number, since it is larger than the sum of its proper divisors (229397470).

320545442 is a wasteful number, since it uses less digits than its factorization.

320545442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18193.

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 320545442 is about 17903.7828963602. The cubic root of 320545442 is about 684.3787800351.

The spelling of 320545442 in words is "three hundred twenty million, five hundred forty-five thousand, four hundred forty-two".