320422402 has 4 divisors (see below), whose sum is σ = 480633606. Its totient is φ = 160211200.

The previous prime is 320422393. The next prime is 320422481. The reversal of 320422402 is 204224023.

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

It can be written as a sum of positive squares in only one way, i.e., 301682161 + 18740241 = 17369^2 + 4329^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 320422402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80105599 + ... + 80105602.

Almost surely, 2^320422402 is an apocalyptic number.

320422402 is a deficient number, since it is larger than the sum of its proper divisors (160211204).

320422402 is a wasteful number, since it uses less digits than its factorization.

320422402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160211203.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 320422402 is about 17900.3464212288. The cubic root of 320422402 is about 684.2912035375.

Adding to 320422402 its reverse (204224023), we get a palindrome (524646425).

The spelling of 320422402 in words is "three hundred twenty million, four hundred twenty-two thousand, four hundred two".