12123234 has 12 divisors (see below), whose sum is σ = 26267046. Its totient is φ = 4041072.

The previous prime is 12123217. The next prime is 12123239. The reversal of 12123234 is 43232121.

12123234 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 7700625 + 4422609 = 2775^2 + 2103^2 .

It is a super-3 number, since 3×12123234³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 673513 = 12123234 / (1 + 2 + 1 + 2 + 3 + 2 + 3 + 4).

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12123239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 336739 + ... + 336774.

Almost surely, 2^12123234 is an apocalyptic number.

12123234 is an abundant number, since it is smaller than the sum of its proper divisors (14143812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12123234 is a wasteful number, since it uses less digits than its factorization.

12123234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673521 (or 673518 counting only the distinct ones).

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

The square root of 12123234 is about 3481.8434772402. The cubic root of 12123234 is about 229.7238904719.

Adding to 12123234 its reverse (43232121), we get a palindrome (55355355).

The spelling of 12123234 in words is "twelve million, one hundred twenty-three thousand, two hundred thirty-four".