320144135142 has 32 divisors (see below), whose sum is σ = 692288432640. Its totient is φ = 98113428000.

The previous prime is 320144135119. The next prime is 320144135203. The reversal of 320144135142 is 241531441023.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8156542 + ... + 8195697.

It is an arithmetic number, because the mean of its divisors is an integer number (21634013520).

Almost surely, 2^320144135142 is an apocalyptic number.

320144135142 is an abundant number, since it is smaller than the sum of its proper divisors (372144297498).

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

320144135142 is a wasteful number, since it uses less digits than its factorization.

320144135142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16352508.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 320144135142 its reverse (241531441023), we get a palindrome (561675576165).

The spelling of 320144135142 in words is "three hundred twenty billion, one hundred forty-four million, one hundred thirty-five thousand, one hundred forty-two".