40242343423 has 4 divisors (see below), whose sum is σ = 40243060440. Its totient is φ = 40241626408.

The previous prime is 40242343417. The next prime is 40242343433. The reversal of 40242343423 is 32434324204.

It is a happy number.

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 40242343423 - 2²⁹ = 39705472511 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 (40242343433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266440 + ... + 389197.

It is an arithmetic number, because the mean of its divisors is an integer number (10060765110).

Almost surely, 2^40242343423 is an apocalyptic number.

40242343423 is a deficient number, since it is larger than the sum of its proper divisors (717017).

40242343423 is an equidigital number, since it uses as much as digits as its factorization.

40242343423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717016.

The product of its (nonzero) digits is 55296, while the sum is 31.

Adding to 40242343423 its reverse (32434324204), we get a palindrome (72676667627).

The spelling of 40242343423 in words is "forty billion, two hundred forty-two million, three hundred forty-three thousand, four hundred twenty-three".