20424040043 has 8 divisors (see below), whose sum is σ = 23249500416. Its totient is φ = 17760034600.

The previous prime is 20424040037. The next prime is 20424040067. The reversal of 20424040043 is 34004042402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20424040043 - 2¹⁰ = 20424039019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20424040003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40363463 + ... + 40363968.

It is an arithmetic number, because the mean of its divisors is an integer number (2906187552).

Almost surely, 2^20424040043 is an apocalyptic number.

20424040043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20424040043 is a deficient number, since it is larger than the sum of its proper divisors (2825460373).

20424040043 is a wasteful number, since it uses less digits than its factorization.

20424040043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80727465.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 20424040043 its reverse (34004042402), we get a palindrome (54428082445).

The spelling of 20424040043 in words is "twenty billion, four hundred twenty-four million, forty thousand, forty-three".