404323405203123 has 128 divisors (see below), whose sum is σ = 721405306880000. Its totient is φ = 218636919781632.

The previous prime is 404323405203073. The next prime is 404323405203197. The reversal of 404323405203123 is 321302504323404.

404323405203123 is a `hidden beast` number, since 4 + 0 + 4 + 3 + 2 + 3 + 4 + 0 + 520 + 3 + 123 = 666.

It is not a de Polignac number, because 404323405203123 - 2⁹ = 404323405202611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404323405203023) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 22942929690 + ... + 22942947312.

It is an arithmetic number, because the mean of its divisors is an integer number (5635978960000).

Almost surely, 2^{404323405203123} is an apocalyptic number.

404323405203123 is a deficient number, since it is larger than the sum of its proper divisors (317081901676877).

404323405203123 is a wasteful number, since it uses less digits than its factorization.

404323405203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24446 (or 24440 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 36.

Adding to 404323405203123 its reverse (321302504323404), we get a palindrome (725625909526527).

The spelling of 404323405203123 in words is "four hundred four trillion, three hundred twenty-three billion, four hundred five million, two hundred three thousand, one hundred twenty-three".