421230213 has 20 divisors (see below), whose sum is σ = 634827468. Its totient is φ = 278328960.

The previous prime is 421230203. The next prime is 421230241. The reversal of 421230213 is 312032124.

421230213 is a `hidden beast` number, since 421 + 2 + 30 + 213 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 209178369 + 212051844 = 14463^2 + 14562^2 .

It is not a de Polignac number, because 421230213 - 2¹⁷ = 421099141 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421230203) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13858 + ... + 32163.

Almost surely, 2^421230213 is an apocalyptic number.

It is an amenable number.

421230213 is a deficient number, since it is larger than the sum of its proper divisors (213597255).

421230213 is a wasteful number, since it uses less digits than its factorization.

421230213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46146 (or 46137 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 421230213 is about 20523.8937095279. The cubic root of 421230213 is about 749.6177091714.

Adding to 421230213 its reverse (312032124), we get a palindrome (733262337).

The spelling of 421230213 in words is "four hundred twenty-one million, two hundred thirty thousand, two hundred thirteen".