404021410023 has 16 divisors (see below), whose sum is σ = 671620006656. Its totient is φ = 209881251840.

The previous prime is 404021409997. The next prime is 404021410043. The reversal of 404021410023 is 320014120404.

It is not a de Polignac number, because 404021410023 - 2²⁶ = 403954301159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404021410043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874504986 + ... + 874505447.

It is an arithmetic number, because the mean of its divisors is an integer number (41976250416).

Almost surely, 2^404021410023 is an apocalyptic number.

404021410023 is a deficient number, since it is larger than the sum of its proper divisors (267598596633).

404021410023 is a wasteful number, since it uses less digits than its factorization.

404021410023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749010454.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 404021410023 its reverse (320014120404), we get a palindrome (724035530427).

The spelling of 404021410023 in words is "four hundred four billion, twenty-one million, four hundred ten thousand, twenty-three".