20320512132142 has 32 divisors (see below), whose sum is σ = 30688849787904. Its totient is φ = 10091172002400.

The previous prime is 20320512132133. The next prime is 20320512132197. The reversal of 20320512132142 is 24123121502302.

It is a happy number.

It is a super-4 number, since 4×20320512132142⁴ (a number of 54 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20320512132142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265565053 + ... + 265641559.

It is an arithmetic number, because the mean of its divisors is an integer number (959026555872).

Almost surely, 2^{20320512132142} is an apocalyptic number.

20320512132142 is a deficient number, since it is larger than the sum of its proper divisors (10368337655762).

20320512132142 is a wasteful number, since it uses less digits than its factorization.

20320512132142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78304.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 20320512132142 its reverse (24123121502302), we get a palindrome (44443633634444).

The spelling of 20320512132142 in words is "twenty trillion, three hundred twenty billion, five hundred twelve million, one hundred thirty-two thousand, one hundred forty-two".