320608742 has 4 divisors (see below), whose sum is σ = 480913116. Its totient is φ = 160304370.

The previous prime is 320608733. The next prime is 320608747. The reversal of 320608742 is 247806023.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 320608699 and 320608708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320608747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80152184 + ... + 80152187.

It is an arithmetic number, because the mean of its divisors is an integer number (120228279).

Almost surely, 2^320608742 is an apocalyptic number.

320608742 is a deficient number, since it is larger than the sum of its proper divisors (160304374).

320608742 is a wasteful number, since it uses less digits than its factorization.

320608742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160304373.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 320608742 is about 17905.5505919254. The cubic root of 320608742 is about 684.4238265088.

The spelling of 320608742 in words is "three hundred twenty million, six hundred eight thousand, seven hundred forty-two".