320404342442 has 4 divisors (see below), whose sum is σ = 480606513666. Its totient is φ = 160202171220.

The previous prime is 320404342441. The next prime is 320404342457. The reversal of 320404342442 is 244243404023.

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., 244746888961 + 75657453481 = 494719^2 + 275059^2 .

It is a junction number, because it is equal to n+sod(n) for n = 320404342399 and 320404342408.

It is not an unprimeable number, because it can be changed into a prime (320404342441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80101085609 + ... + 80101085612.

Almost surely, 2^320404342442 is an apocalyptic number.

320404342442 is a deficient number, since it is larger than the sum of its proper divisors (160202171224).

320404342442 is a wasteful number, since it uses less digits than its factorization.

320404342442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160202171223.

The product of its (nonzero) digits is 73728, while the sum is 32.

Adding to 320404342442 its reverse (244243404023), we get a palindrome (564647746465).

The spelling of 320404342442 in words is "three hundred twenty billion, four hundred four million, three hundred forty-two thousand, four hundred forty-two".