20040424043 has 4 divisors (see below), whose sum is σ = 20135402568. Its totient is φ = 19945445520.

The previous prime is 20040423961. The next prime is 20040424049. The reversal of 20040424043 is 34042404002.

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 20040424043 - 2¹⁰ = 20040423019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20040424049) 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, 47488946 + ... + 47489367.

It is an arithmetic number, because the mean of its divisors is an integer number (5033850642).

Almost surely, 2^20040424043 is an apocalyptic number.

20040424043 is a deficient number, since it is larger than the sum of its proper divisors (94978525).

20040424043 is an equidigital number, since it uses as much as digits as its factorization.

20040424043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94978524.

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

Adding to 20040424043 its reverse (34042404002), we get a palindrome (54082828045).

The spelling of 20040424043 in words is "twenty billion, forty million, four hundred twenty-four thousand, forty-three".