20420044134 has 32 divisors (see below), whose sum is σ = 46691976960. Its totient is φ = 5832099552.

The previous prime is 20420044111. The next prime is 20420044147. The reversal of 20420044134 is 43144002402.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22837 + ... + 203375.

It is an arithmetic number, because the mean of its divisors is an integer number (1459124280).

Almost surely, 2^20420044134 is an apocalyptic number.

20420044134 is an abundant number, since it is smaller than the sum of its proper divisors (26271932826).

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

20420044134 is a wasteful number, since it uses less digits than its factorization.

20420044134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183244.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20420044134 its reverse (43144002402), we get a palindrome (63564046536).

The spelling of 20420044134 in words is "twenty billion, four hundred twenty million, forty-four thousand, one hundred thirty-four".