404240023143 has 64 divisors (see below), whose sum is σ = 660705776640. Its totient is φ = 242228275200.

The previous prime is 404240023051. The next prime is 404240023151. The reversal of 404240023143 is 341320042404.

It is a happy number.

404240023143 is a `hidden beast` number, since 4 + 0 + 424 + 0 + 0 + 231 + 4 + 3 = 666.

It is not a de Polignac number, because 404240023143 - 2⁹ = 404240022631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404240023183) 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 63 ways as a sum of consecutive naturals, for example, 31597078 + ... + 31609868.

It is an arithmetic number, because the mean of its divisors is an integer number (10323527760).

Almost surely, 2^404240023143 is an apocalyptic number.

404240023143 is a deficient number, since it is larger than the sum of its proper divisors (256465753497).

404240023143 is a wasteful number, since it uses less digits than its factorization.

404240023143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14005 (or 13999 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 404240023143 its reverse (341320042404), we get a palindrome (745560065547).

The spelling of 404240023143 in words is "four hundred four billion, two hundred forty million, twenty-three thousand, one hundred forty-three".