20142242534442 has 16 divisors (see below), whose sum is σ = 46039411507392. Its totient is φ = 5754926438400.

The previous prime is 20142242534387. The next prime is 20142242534473. The reversal of 20142242534442 is 24443524224102.

It is a self number, because there is not a number n which added to its sum of digits gives 20142242534442.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239788601559 + ... + 239788601642.

It is an arithmetic number, because the mean of its divisors is an integer number (2877463219212).

Almost surely, 2^{20142242534442} is an apocalyptic number.

20142242534442 is an abundant number, since it is smaller than the sum of its proper divisors (25897168972950).

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

20142242534442 is a wasteful number, since it uses less digits than its factorization.

20142242534442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479577203213.

The product of its (nonzero) digits is 491520, while the sum is 39.

Adding to 20142242534442 its reverse (24443524224102), we get a palindrome (44585766758544).

The spelling of 20142242534442 in words is "twenty trillion, one hundred forty-two billion, two hundred forty-two million, five hundred thirty-four thousand, four hundred forty-two".