20020120525243 has 4 divisors (see below), whose sum is σ = 20140001486640. Its totient is φ = 19900239563848.

The previous prime is 20020120525199. The next prime is 20020120525253. The reversal of 20020120525243 is 34252502102002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20020120525243 - 2³⁷ = 19882681571771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020120525253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59940480448 + ... + 59940480781.

It is an arithmetic number, because the mean of its divisors is an integer number (5035000371660).

Almost surely, 2^{20020120525243} is an apocalyptic number.

20020120525243 is a deficient number, since it is larger than the sum of its proper divisors (119880961397).

20020120525243 is a wasteful number, since it uses less digits than its factorization.

20020120525243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119880961396.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20020120525243 its reverse (34252502102002), we get a palindrome (54272622627245).

The spelling of 20020120525243 in words is "twenty trillion, twenty billion, one hundred twenty million, five hundred twenty-five thousand, two hundred forty-three".