201042020423 has 4 divisors (see below), whose sum is σ = 201043648680. Its totient is φ = 201040392168.

The previous prime is 201042020381. The next prime is 201042020471. The reversal of 201042020423 is 324020240102.

201042020423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201042020423 - 2²⁰ = 201040971847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201042020395 and 201042020404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201042023423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 612233 + ... + 881426.

It is an arithmetic number, because the mean of its divisors is an integer number (50260912170).

Almost surely, 2^201042020423 is an apocalyptic number.

201042020423 is a deficient number, since it is larger than the sum of its proper divisors (1628257).

201042020423 is a wasteful number, since it uses less digits than its factorization.

201042020423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628256.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 201042020423 its reverse (324020240102), we get a palindrome (525062260525).

The spelling of 201042020423 in words is "two hundred one billion, forty-two million, twenty thousand, four hundred twenty-three".