12138262 has 8 divisors (see below), whose sum is σ = 18226296. Its totient is φ = 6062832.

The previous prime is 12138251. The next prime is 12138263. The reversal of 12138262 is 26283121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12138263) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 183 + ... + 4930.

It is an arithmetic number, because the mean of its divisors is an integer number (2278287).

Almost surely, 2^12138262 is an apocalyptic number.

12138262 is a deficient number, since it is larger than the sum of its proper divisors (6088034).

12138262 is a wasteful number, since it uses less digits than its factorization.

12138262 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6302.

The product of its digits is 1152, while the sum is 25.

The square root of 12138262 is about 3484.0008610791. Note that the first 3 decimals coincide. The cubic root of 12138262 is about 229.8187734356.

It can be divided in two parts, 121 and 38262, that added together give a palindrome (38383).

The spelling of 12138262 in words is "twelve million, one hundred thirty-eight thousand, two hundred sixty-two".