423506423 has 4 divisors (see below), whose sum is σ = 423723048. Its totient is φ = 423289800.

The previous prime is 423506399. The next prime is 423506443. The reversal of 423506423 is 324605324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423506423 - 2¹⁰ = 423505399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423506443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105353 + ... + 109298.

It is an arithmetic number, because the mean of its divisors is an integer number (105930762).

Almost surely, 2^423506423 is an apocalyptic number.

423506423 is a deficient number, since it is larger than the sum of its proper divisors (216625).

423506423 is a wasteful number, since it uses less digits than its factorization.

423506423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216624.

The product of its (nonzero) digits is 17280, while the sum is 29.

The square root of 423506423 is about 20579.2716829338. The cubic root of 423506423 is about 750.9655256654.

The spelling of 423506423 in words is "four hundred twenty-three million, five hundred six thousand, four hundred twenty-three".