320120342 has 4 divisors (see below), whose sum is σ = 480180516. Its totient is φ = 160060170.

The previous prime is 320120329. The next prime is 320120347. The reversal of 320120342 is 243021023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243021023 = 7 ⋅34717289.

It is a self number, because there is not a number n which added to its sum of digits gives 320120342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320120347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80030084 + ... + 80030087.

It is an arithmetic number, because the mean of its divisors is an integer number (120045129).

Almost surely, 2^320120342 is an apocalyptic number.

320120342 is a deficient number, since it is larger than the sum of its proper divisors (160060174).

320120342 is a wasteful number, since it uses less digits than its factorization.

320120342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160060173.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 320120342 is about 17891.9071649727. The cubic root of 320120342 is about 684.0761103935.

Adding to 320120342 its reverse (243021023), we get a palindrome (563141365).

The spelling of 320120342 in words is "three hundred twenty million, one hundred twenty thousand, three hundred forty-two".