40240004423 has 4 divisors (see below), whose sum is σ = 40240451160. Its totient is φ = 40239557688.

The previous prime is 40240004393. The next prime is 40240004437. The reversal of 40240004423 is 32440004204.

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.

It is a cyclic number.

It is not a de Polignac number, because 40240004423 - 2⁶ = 40240004359 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 (40240009423) 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, 35693 + ... + 285926.

It is an arithmetic number, because the mean of its divisors is an integer number (10060112790).

Almost surely, 2^40240004423 is an apocalyptic number.

40240004423 is a deficient number, since it is larger than the sum of its proper divisors (446737).

40240004423 is a wasteful number, since it uses less digits than its factorization.

40240004423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446736.

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 40240004423 its reverse (32440004204), we get a palindrome (72680008627).

The spelling of 40240004423 in words is "forty billion, two hundred forty million, four thousand, four hundred twenty-three".