20043442345342 has 16 divisors (see below), whose sum is σ = 32625027710352. Its totient is φ = 9180202599360.

The previous prime is 20043442345337. The next prime is 20043442345349. The reversal of 20043442345342 is 24354324434002.

It is a junction number, because it is equal to n+sod(n) for n = 20043442345295 and 20043442345304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20043442345349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2942369223 + ... + 2942376034.

It is an arithmetic number, because the mean of its divisors is an integer number (2039064231897).

Almost surely, 2^{20043442345342} is an apocalyptic number.

20043442345342 is a deficient number, since it is larger than the sum of its proper divisors (12581585365010).

20043442345342 is a wasteful number, since it uses less digits than its factorization.

20043442345342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884745403.

The product of its (nonzero) digits is 1105920, while the sum is 40.

Adding to 20043442345342 its reverse (24354324434002), we get a palindrome (44397766779344).

The spelling of 20043442345342 in words is "twenty trillion, forty-three billion, four hundred forty-two million, three hundred forty-five thousand, three hundred forty-two".