20542302134004 has 144 divisors (see below), whose sum is σ = 55882395276288. Its totient is φ = 5856108414912.

The previous prime is 20542302133987. The next prime is 20542302134009. The reversal of 20542302134004 is 40043120324502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20542302134009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1146132987 + ... + 1146150909.

Almost surely, 2^{20542302134004} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20542302134004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27941197638144).

20542302134004 is an abundant number, since it is smaller than the sum of its proper divisors (35340093142284).

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

20542302134004 is a wasteful number, since it uses less digits than its factorization.

20542302134004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22194 (or 22185 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 20542302134004 its reverse (40043120324502), we get a palindrome (60585422458506).

The spelling of 20542302134004 in words is "twenty trillion, five hundred forty-two billion, three hundred two million, one hundred thirty-four thousand, four".