12432423434 has 8 divisors (see below), whose sum is σ = 18654274020. Its totient is φ = 6214332096.

The previous prime is 12432423433. The next prime is 12432423449. The reversal of 12432423434 is 43432423421.

It can be written as a sum of positive squares in 2 ways, for example, as 12364772809 + 67650625 = 111197^2 + 8225^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 12432423434.

It is not an unprimeable number, because it can be changed into a prime (12432423433) 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, 931529 + ... + 944780.

Almost surely, 2^12432423434 is an apocalyptic number.

12432423434 is a deficient number, since it is larger than the sum of its proper divisors (6221850586).

12432423434 is a wasteful number, since it uses less digits than its factorization.

12432423434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879624.

The product of its digits is 55296, while the sum is 32.

Adding to 12432423434 its reverse (43432423421), we get a palindrome (55864846855).

The spelling of 12432423434 in words is "twelve billion, four hundred thirty-two million, four hundred twenty-three thousand, four hundred thirty-four".