43424423423 has 4 divisors (see below), whose sum is σ = 43490119128. Its totient is φ = 43358727720.

The previous prime is 43424423389. The next prime is 43424423461. The reversal of 43424423423 is 32432442434.

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 43424423423 - 2⁶ = 43424423359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43424423023) 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, 32846861 + ... + 32848182.

It is an arithmetic number, because the mean of its divisors is an integer number (10872529782).

Almost surely, 2^43424423423 is an apocalyptic number.

43424423423 is a deficient number, since it is larger than the sum of its proper divisors (65695705).

43424423423 is an equidigital number, since it uses as much as digits as its factorization.

43424423423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65695704.

The product of its digits is 221184, while the sum is 35.

Adding to 43424423423 its reverse (32432442434), we get a palindrome (75856865857).

The spelling of 43424423423 in words is "forty-three billion, four hundred twenty-four million, four hundred twenty-three thousand, four hundred twenty-three".