32440042423 has 4 divisors (see below), whose sum is σ = 32440455760. Its totient is φ = 32439629088.

The previous prime is 32440042409. The next prime is 32440042477. The reversal of 32440042423 is 32424004423.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 32424004423 = 59 ⋅549559397.

It is a cyclic number.

It is not a de Polignac number, because 32440042423 - 2¹⁷ = 32439911351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32440042391 and 32440042400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32440042493) 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, 48690 + ... + 259327.

It is an arithmetic number, because the mean of its divisors is an integer number (8110113940).

Almost surely, 2^32440042423 is an apocalyptic number.

32440042423 is a deficient number, since it is larger than the sum of its proper divisors (413337).

32440042423 is a wasteful number, since it uses less digits than its factorization.

32440042423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413336.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 32440042423 its reverse (32424004423), we get a palindrome (64864046846).

The spelling of 32440042423 in words is "thirty-two billion, four hundred forty million, forty-two thousand, four hundred twenty-three".