12162138 has 8 divisors (see below), whose sum is σ = 24324288. Its totient is φ = 4054044.

The previous prime is 12162133. The next prime is 12162169. The reversal of 12162138 is 83126121.

12162138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

12162138 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12162131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013506 + ... + 1013517.

It is an arithmetic number, because the mean of its divisors is an integer number (3040536).

Almost surely, 2^12162138 is an apocalyptic number.

12162138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12162138 is a wasteful number, since it uses less digits than its factorization.

12162138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027028.

The product of its digits is 576, while the sum is 24.

The square root of 12162138 is about 3487.4256981332. The cubic root of 12162138 is about 229.9693594973.

Adding to 12162138 its reverse (83126121), we get a palindrome (95288259).

The spelling of 12162138 in words is "twelve million, one hundred sixty-two thousand, one hundred thirty-eight".