20104042134 has 32 divisors (see below), whose sum is σ = 44418608640. Its totient is φ = 6015016800.

The previous prime is 20104042129. The next prime is 20104042169. The reversal of 20104042134 is 43124040102.

It is a self number, because there is not a number n which added to its sum of digits gives 20104042134.

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, 1922677 + ... + 1933104.

It is an arithmetic number, because the mean of its divisors is an integer number (1388081520).

Almost surely, 2^20104042134 is an apocalyptic number.

20104042134 is an abundant number, since it is smaller than the sum of its proper divisors (24314566506).

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

20104042134 is a wasteful number, since it uses less digits than its factorization.

20104042134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3855876.

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

Adding to 20104042134 its reverse (43124040102), we get a palindrome (63228082236).

The spelling of 20104042134 in words is "twenty billion, one hundred four million, forty-two thousand, one hundred thirty-four".