421234223 has 4 divisors (see below), whose sum is σ = 421366968. Its totient is φ = 421101480.

The previous prime is 421234207. The next prime is 421234243. The reversal of 421234223 is 322432124.

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 421234223 - 2⁴ = 421234207 is a prime.

It is a super-3 number, since 3×421234223³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421234243) 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, 61493 + ... + 67998.

It is an arithmetic number, because the mean of its divisors is an integer number (105341742).

Almost surely, 2^421234223 is an apocalyptic number.

421234223 is a deficient number, since it is larger than the sum of its proper divisors (132745).

421234223 is a wasteful number, since it uses less digits than its factorization.

421234223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132744.

The product of its digits is 2304, while the sum is 23.

The square root of 421234223 is about 20523.9914003100. The cubic root of 421234223 is about 749.6200878845.

Adding to 421234223 its reverse (322432124), we get a palindrome (743666347).

The spelling of 421234223 in words is "four hundred twenty-one million, two hundred thirty-four thousand, two hundred twenty-three".