12123234342 has 12 divisors (see below), whose sum is σ = 26267007780. Its totient is φ = 4041078108.

The previous prime is 12123234313. The next prime is 12123234401. The reversal of 12123234342 is 24343232121.

It is a super-2 number, since 2×12123234342² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 336756492 + ... + 336756527.

It is an arithmetic number, because the mean of its divisors is an integer number (2188917315).

Almost surely, 2^12123234342 is an apocalyptic number.

12123234342 is an abundant number, since it is smaller than the sum of its proper divisors (14143773438).

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

12123234342 is a wasteful number, since it uses less digits than its factorization.

12123234342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673513027 (or 673513024 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

Adding to 12123234342 its reverse (24343232121), we get a palindrome (36466466463).

The spelling of 12123234342 in words is "twelve billion, one hundred twenty-three million, two hundred thirty-four thousand, three hundred forty-two".