20134020042 has 16 divisors (see below), whose sum is σ = 44742266880. Its totient is φ = 6711339996.

The previous prime is 20134020041. The next prime is 20134020079. The reversal of 20134020042 is 24002043102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20134019997 and 20134020024.

It is not an unprimeable number, because it can be changed into a prime (20134020041) 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, 186426058 + ... + 186426165.

It is an arithmetic number, because the mean of its divisors is an integer number (2796391680).

Almost surely, 2^20134020042 is an apocalyptic number.

20134020042 is an abundant number, since it is smaller than the sum of its proper divisors (24608246838).

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

20134020042 is a wasteful number, since it uses less digits than its factorization.

20134020042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372852234 (or 372852228 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20134020042 its reverse (24002043102), we get a palindrome (44136063144).

The spelling of 20134020042 in words is "twenty billion, one hundred thirty-four million, twenty thousand, forty-two".