320144142 has 16 divisors (see below), whose sum is σ = 645955920. Its totient is φ = 105770112.

The previous prime is 320144101. The next prime is 320144147. The reversal of 320144142 is 241441023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320144147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235417 + ... + 236772.

It is an arithmetic number, because the mean of its divisors is an integer number (40372245).

Almost surely, 2^320144142 is an apocalyptic number.

320144142 is an abundant number, since it is smaller than the sum of its proper divisors (325811778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320144142 is a wasteful number, since it uses less digits than its factorization.

320144142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472307.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 320144142 is about 17892.5722577834. The cubic root of 320144142 is about 684.0930629848.

Adding to 320144142 its reverse (241441023), we get a palindrome (561585165).

The spelling of 320144142 in words is "three hundred twenty million, one hundred forty-four thousand, one hundred forty-two".