20242143423 has 12 divisors (see below), whose sum is σ = 30958572528. Its totient is φ = 12700952640.

The previous prime is 20242143391. The next prime is 20242143451. The reversal of 20242143423 is 32434124202.

20242143423 is a `hidden beast` number, since 2 + 0 + 24 + 214 + 3 + 423 = 666.

It is not a de Polignac number, because 20242143423 - 2⁵ = 20242143391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20242143023) 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 11 ways as a sum of consecutive naturals, for example, 66150643 + ... + 66150948.

It is an arithmetic number, because the mean of its divisors is an integer number (2579881044).

Almost surely, 2^20242143423 is an apocalyptic number.

20242143423 is a deficient number, since it is larger than the sum of its proper divisors (10716429105).

20242143423 is a wasteful number, since it uses less digits than its factorization.

20242143423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132301614 (or 132301611 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20242143423 its reverse (32434124202), we get a palindrome (52676267625).

The spelling of 20242143423 in words is "twenty billion, two hundred forty-two million, one hundred forty-three thousand, four hundred twenty-three".