20420105373 has 32 divisors (see below), whose sum is σ = 32043340800. Its totient is φ = 12807894528.

The previous prime is 20420105359. The next prime is 20420105389. The reversal of 20420105373 is 37350102402.

It is not a de Polignac number, because 20420105373 - 2⁸ = 20420105117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420105323) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1569268 + ... + 1582226.

It is an arithmetic number, because the mean of its divisors is an integer number (1001354400).

Almost surely, 2^20420105373 is an apocalyptic number.

It is an amenable number.

20420105373 is a deficient number, since it is larger than the sum of its proper divisors (11623235427).

20420105373 is a wasteful number, since it uses less digits than its factorization.

20420105373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16418 (or 16412 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

Adding to 20420105373 its reverse (37350102402), we get a palindrome (57770207775).

The spelling of 20420105373 in words is "twenty billion, four hundred twenty million, one hundred five thousand, three hundred seventy-three".