12254138 has 8 divisors (see below), whose sum is σ = 19795188. Its totient is φ = 5655744.

The previous prime is 12254131. The next prime is 12254167. The reversal of 12254138 is 83145221.

It can be written as a sum of positive squares in 2 ways, for example, as 10608049 + 1646089 = 3257^2 + 1283^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (26), and also a Moran number because the ratio is a prime number: 471313 = 12254138 / (1 + 2 + 2 + 5 + 4 + 1 + 3 + 8).

It is not an unprimeable number, because it can be changed into a prime (12254131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235631 + ... + 235682.

Almost surely, 2^12254138 is an apocalyptic number.

12254138 is a deficient number, since it is larger than the sum of its proper divisors (7541050).

12254138 is a wasteful number, since it uses less digits than its factorization.

12254138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471328.

The product of its digits is 1920, while the sum is 26.

The square root of 12254138 is about 3500.5910929442. The cubic root of 12254138 is about 230.5477681235.

Adding to 12254138 its reverse (83145221), we get a palindrome (95399359).

The spelling of 12254138 in words is "twelve million, two hundred fifty-four thousand, one hundred thirty-eight".