320142142 has 8 divisors (see below), whose sum is σ = 488352600. Its totient is φ = 157357944.

The previous prime is 320142131. The next prime is 320142149. The reversal of 320142142 is 241241023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320142149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1356417 + ... + 1356652.

It is an arithmetic number, because the mean of its divisors is an integer number (61044075).

Almost surely, 2^320142142 is an apocalyptic number.

320142142 is a deficient number, since it is larger than the sum of its proper divisors (168210458).

320142142 is a wasteful number, since it uses less digits than its factorization.

320142142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2713130.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 320142142 is about 17892.5163685827. The cubic root of 320142142 is about 684.0916384296.

Adding to 320142142 its reverse (241241023), we get a palindrome (561383165).

The spelling of 320142142 in words is "three hundred twenty million, one hundred forty-two thousand, one hundred forty-two".