12135156 has 48 divisors (see below), whose sum is σ = 31147200. Its totient is φ = 3646720.

The previous prime is 12135143. The next prime is 12135163. The reversal of 12135156 is 65153121.

It is a super-2 number, since 2×12135156² = 294524022288672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 19360 + ... + 19976.

It is an arithmetic number, because the mean of its divisors is an integer number (648900).

Almost surely, 2^12135156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12135156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15573600).

12135156 is an abundant number, since it is smaller than the sum of its proper divisors (19012044).

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

12135156 is a wasteful number, since it uses less digits than its factorization.

12135156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 784 (or 782 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 12135156 is about 3483.5550806611. Note that the first 3 decimals coincide. The cubic root of 12135156 is about 229.7991693659.

Adding to 12135156 its reverse (65153121), we get a palindrome (77288277).

The spelling of 12135156 in words is "twelve million, one hundred thirty-five thousand, one hundred fifty-six".