404340123143 has 16 divisors (see below), whose sum is σ = 467438096160. Its totient is φ = 346250419200.

The previous prime is 404340123101. The next prime is 404340123151. The reversal of 404340123143 is 341321043404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 404340123143 - 2²⁰ = 404339074567 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404340122143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15444530 + ... + 15470687.

It is an arithmetic number, because the mean of its divisors is an integer number (29214881010).

Almost surely, 2^404340123143 is an apocalyptic number.

404340123143 is a deficient number, since it is larger than the sum of its proper divisors (63097973017).

404340123143 is a wasteful number, since it uses less digits than its factorization.

404340123143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30915298.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 404340123143 its reverse (341321043404), we get a palindrome (745661166547).

The spelling of 404340123143 in words is "four hundred four billion, three hundred forty million, one hundred twenty-three thousand, one hundred forty-three".