12135826 has 4 divisors (see below), whose sum is σ = 18203742. Its totient is φ = 6067912.

The previous prime is 12135821. The next prime is 12135853. The reversal of 12135826 is 62853121.

12135826 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 9579025 + 2556801 = 3095^2 + 1599^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12135794 and 12135803.

It is not an unprimeable number, because it can be changed into a prime (12135821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3033955 + ... + 3033958.

Almost surely, 2^12135826 is an apocalyptic number.

12135826 is a deficient number, since it is larger than the sum of its proper divisors (6067916).

12135826 is an equidigital number, since it uses as much as digits as its factorization.

12135826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6067915.

The product of its digits is 2880, while the sum is 28.

The square root of 12135826 is about 3483.6512454607. The cubic root of 12135826 is about 229.8033984726.

Adding to 12135826 its reverse (62853121), we get a palindrome (74988947).

The spelling of 12135826 in words is "twelve million, one hundred thirty-five thousand, eight hundred twenty-six".