12172134 has 32 divisors (see below), whose sum is σ = 26468064. Its totient is φ = 3709440.

The previous prime is 12172133. The next prime is 12172151. The reversal of 12172134 is 43127121.

It is a super-2 number, since 2×12172134² = 296321692227912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12172134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12172133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8124 + ... + 9504.

It is an arithmetic number, because the mean of its divisors is an integer number (827127).

Almost surely, 2^12172134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12172134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13234032).

12172134 is an abundant number, since it is smaller than the sum of its proper divisors (14295930).

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

12172134 is a wasteful number, since it uses less digits than its factorization.

12172134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512.

The product of its digits is 336, while the sum is 21.

The square root of 12172134 is about 3488.8585525928. The cubic root of 12172134 is about 230.0323457974.

Adding to 12172134 its reverse (43127121), we get a palindrome (55299255).

The spelling of 12172134 in words is "twelve million, one hundred seventy-two thousand, one hundred thirty-four".