12134538 has 36 divisors (see below), whose sum is σ = 28476630. Its totient is φ = 3732768.

The previous prime is 12134531. The next prime is 12134543. The reversal of 12134538 is 83543121.

It is a happy number.

12134538 is a `hidden beast` number, since 121 + 3 + 4 + 538 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 5919489 + 6215049 = 2433^2 + 2493^2 .

It is not an unprimeable number, because it can be changed into a prime (12134531) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1048 + ... + 5036.

Almost surely, 2^12134538 is an apocalyptic number.

12134538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12134538, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14238315).

12134538 is an abundant number, since it is smaller than the sum of its proper divisors (16342092).

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

12134538 is a wasteful number, since it uses less digits than its factorization.

12134538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4023 (or 4007 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 12134538 is about 3483.4663770446. The cubic root of 12134538 is about 229.7952683503.

Adding to 12134538 its reverse (83543121), we get a palindrome (95677659).

The spelling of 12134538 in words is "twelve million, one hundred thirty-four thousand, five hundred thirty-eight".