12135254 has 8 divisors (see below), whose sum is σ = 18379920. Its totient is φ = 6008616.

The previous prime is 12135217. The next prime is 12135257. The reversal of 12135254 is 45253121.

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 (12135257) 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, 29249 + ... + 29660.

It is an arithmetic number, because the mean of its divisors is an integer number (2297490).

Almost surely, 2^12135254 is an apocalyptic number.

12135254 is a deficient number, since it is larger than the sum of its proper divisors (6244666).

12135254 is a wasteful number, since it uses less digits than its factorization.

12135254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59014.

The product of its digits is 1200, while the sum is 23.

The square root of 12135254 is about 3483.5691467229. The cubic root of 12135254 is about 229.7997879614.

Adding to 12135254 its reverse (45253121), we get a palindrome (57388375).

The spelling of 12135254 in words is "twelve million, one hundred thirty-five thousand, two hundred fifty-four".