234105421 has 4 divisors (see below), whose sum is σ = 255387744. Its totient is φ = 212823100.

The previous prime is 234105383. The next prime is 234105439. The reversal of 234105421 is 124501432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 234105421 - 2²¹ = 232008269 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 234105392 and 234105401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234105721) 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, 10641145 + ... + 10641166.

It is an arithmetic number, because the mean of its divisors is an integer number (63846936).

Almost surely, 2^234105421 is an apocalyptic number.

It is an amenable number.

234105421 is a deficient number, since it is larger than the sum of its proper divisors (21282323).

234105421 is a wasteful number, since it uses less digits than its factorization.

234105421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21282322.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 234105421 is about 15300.5039459490. The cubic root of 234105421 is about 616.3165406989.

Adding to 234105421 its reverse (124501432), we get a palindrome (358606853).

The spelling of 234105421 in words is "two hundred thirty-four million, one hundred five thousand, four hundred twenty-one".