421212230 has 16 divisors (see below), whose sum is σ = 802781280. Its totient is φ = 158573952.

The previous prime is 421212199. The next prime is 421212251. The reversal of 421212230 is 32212124.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 421212199 and 421212208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238690 + ... + 1239029.

It is an arithmetic number, because the mean of its divisors is an integer number (50173830).

Almost surely, 2^421212230 is an apocalyptic number.

421212230 is a deficient number, since it is larger than the sum of its proper divisors (381569050).

421212230 is a wasteful number, since it uses less digits than its factorization.

421212230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477743.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 421212230 is about 20523.4556057210. The cubic root of 421212230 is about 749.6070415549.

Adding to 421212230 its reverse (32212124), we get a palindrome (453424354).

The spelling of 421212230 in words is "four hundred twenty-one million, two hundred twelve thousand, two hundred thirty".