423210009 has 32 divisors (see below), whose sum is σ = 614246400. Its totient is φ = 258327360.

The previous prime is 423210001. The next prime is 423210013. The reversal of 423210009 is 900012324.

It is not a de Polignac number, because 423210009 - 2³ = 423210001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (423210001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 204112 + ... + 206174.

It is an arithmetic number, because the mean of its divisors is an integer number (19195200).

Almost surely, 2^423210009 is an apocalyptic number.

It is an amenable number.

423210009 is a deficient number, since it is larger than the sum of its proper divisors (191036391).

423210009 is a wasteful number, since it uses less digits than its factorization.

423210009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2205.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 423210009 is about 20572.0686611726. The cubic root of 423210009 is about 750.7902834214.

It can be divided in two parts, 4232 and 10009, that added together give a palindrome (14241).

The spelling of 423210009 in words is "four hundred twenty-three million, two hundred ten thousand, nine".