404423242443 has 64 divisors (see below), whose sum is σ = 672562114560. Its totient is φ = 238052908800.

The previous prime is 404423242439. The next prime is 404423242471. The reversal of 404423242443 is 344242324404.

404423242443 is a `hidden beast` number, since 404 + 4 + 2 + 3 + 2 + 4 + 244 + 3 = 666.

It is not a de Polignac number, because 404423242443 - 2² = 404423242439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 404423242398 and 404423242407.

It is not an unprimeable number, because it can be changed into a prime (404423242423) 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 63 ways as a sum of consecutive naturals, for example, 2641005 + ... + 2789937.

It is an arithmetic number, because the mean of its divisors is an integer number (10508783040).

Almost surely, 2^404423242443 is an apocalyptic number.

404423242443 is a deficient number, since it is larger than the sum of its proper divisors (268138872117).

404423242443 is a wasteful number, since it uses less digits than its factorization.

404423242443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149217 (or 149211 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 36.

Adding to 404423242443 its reverse (344242324404), we get a palindrome (748665566847).

The spelling of 404423242443 in words is "four hundred four billion, four hundred twenty-three million, two hundred forty-two thousand, four hundred forty-three".