20424000243 has 16 divisors (see below), whose sum is σ = 28843226496. Its totient is φ = 12810906240.

The previous prime is 20424000229. The next prime is 20424000263. The reversal of 20424000243 is 34200042402.

It is not a de Polignac number, because 20424000243 - 2⁵ = 20424000211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20424000263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98008 + ... + 224618.

It is an arithmetic number, because the mean of its divisors is an integer number (1802701656).

Almost surely, 2^20424000243 is an apocalyptic number.

20424000243 is a deficient number, since it is larger than the sum of its proper divisors (8419226253).

20424000243 is a wasteful number, since it uses less digits than its factorization.

20424000243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129794.

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 20424000243 its reverse (34200042402), we get a palindrome (54624042645).

The spelling of 20424000243 in words is "twenty billion, four hundred twenty-four million, two hundred forty-three", and thus it is an aban number.