423504123 has 16 divisors (see below), whose sum is σ = 647629056. Its totient is φ = 241143840.

The previous prime is 423504101. The next prime is 423504149. The reversal of 423504123 is 321405324.

It is not a de Polignac number, because 423504123 - 2⁹ = 423503611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 423504093 and 423504102.

It is not an unprimeable number, because it can be changed into a prime (423504163) 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, 29688 + ... + 41573.

It is an arithmetic number, because the mean of its divisors is an integer number (40476816).

Almost surely, 2^423504123 is an apocalyptic number.

423504123 is a deficient number, since it is larger than the sum of its proper divisors (224124933).

423504123 is a wasteful number, since it uses less digits than its factorization.

423504123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71554.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 423504123 is about 20579.2158013856. The cubic root of 423504123 is about 750.9641662025.

Adding to 423504123 its reverse (321405324), we get a palindrome (744909447).

The spelling of 423504123 in words is "four hundred twenty-three million, five hundred four thousand, one hundred twenty-three".