40040200423 has 4 divisors (see below), whose sum is σ = 41122368040. Its totient is φ = 38958032808.

The previous prime is 40040200391. The next prime is 40040200451. The reversal of 40040200423 is 32400204004.

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 40040200423 - 2⁵ = 40040200391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40040200423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040200483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 541083753 + ... + 541083826.

It is an arithmetic number, because the mean of its divisors is an integer number (10280592010).

Almost surely, 2^40040200423 is an apocalyptic number.

40040200423 is a deficient number, since it is larger than the sum of its proper divisors (1082167617).

40040200423 is a wasteful number, since it uses less digits than its factorization.

40040200423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082167616.

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 40040200423 its reverse (32400204004), we get a palindrome (72440404427).

The spelling of 40040200423 in words is "forty billion, forty million, two hundred thousand, four hundred twenty-three".