20424000043 has 4 divisors (see below), whose sum is σ = 20425243288. Its totient is φ = 20422756800.

The previous prime is 20424000029. The next prime is 20424000067. The reversal of 20424000043 is 34000042402.

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 20424000043 - 2¹³ = 20423991851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20424000743) 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, 596646 + ... + 629947.

It is an arithmetic number, because the mean of its divisors is an integer number (5106310822).

Almost surely, 2^20424000043 is an apocalyptic number.

20424000043 is a deficient number, since it is larger than the sum of its proper divisors (1243245).

20424000043 is a wasteful number, since it uses less digits than its factorization.

20424000043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1243244.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 20424000043 its reverse (34000042402), we get a palindrome (54424042445).

The spelling of 20424000043 in words is "twenty billion, four hundred twenty-four million, forty-three", and thus it is an aban number.