43123413423 has 4 divisors (see below), whose sum is σ = 57497884568. Its totient is φ = 28748942280.

The previous prime is 43123413373. The next prime is 43123413433. The reversal of 43123413423 is 32431432134.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 43123413423 - 2¹⁷ = 43123282351 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 (43123413433) 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, 7187235568 + ... + 7187235573.

It is an arithmetic number, because the mean of its divisors is an integer number (14374471142).

Almost surely, 2^43123413423 is an apocalyptic number.

43123413423 is a deficient number, since it is larger than the sum of its proper divisors (14374471145).

43123413423 is a wasteful number, since it uses less digits than its factorization.

43123413423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14374471144.

The product of its digits is 20736, while the sum is 30.

Adding to 43123413423 its reverse (32431432134), we get a palindrome (75554845557).

The spelling of 43123413423 in words is "forty-three billion, one hundred twenty-three million, four hundred thirteen thousand, four hundred twenty-three".