43256212423 has 4 divisors (see below), whose sum is σ = 43271927568. Its totient is φ = 43240497280.

The previous prime is 43256212409. The next prime is 43256212469. The reversal of 43256212423 is 32421265234.

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 43256212423 - 2²⁵ = 43222657991 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 (43256312423) 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 3 ways as a sum of consecutive naturals, for example, 7853443 + ... + 7858948.

It is an arithmetic number, because the mean of its divisors is an integer number (10817981892).

Almost surely, 2^43256212423 is an apocalyptic number.

43256212423 is a deficient number, since it is larger than the sum of its proper divisors (15715145).

43256212423 is a wasteful number, since it uses less digits than its factorization.

43256212423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15715144.

The product of its digits is 69120, while the sum is 34.

Adding to 43256212423 its reverse (32421265234), we get a palindrome (75677477657).

The spelling of 43256212423 in words is "forty-three billion, two hundred fifty-six million, two hundred twelve thousand, four hundred twenty-three".