320073442 has 16 divisors (see below), whose sum is σ = 517358520. Its totient is φ = 147635712.

The previous prime is 320073409. The next prime is 320073491. The reversal of 320073442 is 244370023.

It can be written as a sum of positive squares in 4 ways, for example, as 197993041 + 122080401 = 14071^2 + 11049^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59538 + ... + 64690.

Almost surely, 2^320073442 is an apocalyptic number.

320073442 is a deficient number, since it is larger than the sum of its proper divisors (197285078).

320073442 is a wasteful number, since it uses less digits than its factorization.

320073442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7557.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 320073442 is about 17890.5964685362. The cubic root of 320073442 is about 684.0427013570.

The spelling of 320073442 in words is "three hundred twenty million, seventy-three thousand, four hundred forty-two".