423040255503 has 32 divisors (see below), whose sum is σ = 581942702016. Its totient is φ = 273153835008.

The previous prime is 423040255471. The next prime is 423040255523. The reversal of 423040255503 is 305552040324.

It is a happy number.

It is not a de Polignac number, because 423040255503 - 2⁵ = 423040255471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423040255523) 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 31 ways as a sum of consecutive naturals, for example, 35445325 + ... + 35457257.

It is an arithmetic number, because the mean of its divisors is an integer number (18185709438).

Almost surely, 2^423040255503 is an apocalyptic number.

423040255503 is a deficient number, since it is larger than the sum of its proper divisors (158902446513).

423040255503 is a wasteful number, since it uses less digits than its factorization.

423040255503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13403.

The product of its (nonzero) digits is 72000, while the sum is 33.

Adding to 423040255503 its reverse (305552040324), we get a palindrome (728592295827).

The spelling of 423040255503 in words is "four hundred twenty-three billion, forty million, two hundred fifty-five thousand, five hundred three".