12135142 has 8 divisors (see below), whose sum is σ = 18219096. Its totient is φ = 6062112.

The previous prime is 12135121. The next prime is 12135143. The reversal of 12135142 is 24153121.

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 (12135143) 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, 1153 + ... + 5059.

It is an arithmetic number, because the mean of its divisors is an integer number (2277387).

Almost surely, 2^12135142 is an apocalyptic number.

12135142 is a deficient number, since it is larger than the sum of its proper divisors (6083954).

12135142 is a wasteful number, since it uses less digits than its factorization.

12135142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462.

The product of its digits is 240, while the sum is 19.

The square root of 12135142 is about 3483.5530712191. The cubic root of 12135142 is about 229.7990809948.

Adding to 12135142 its reverse (24153121), we get a palindrome (36288263).

The spelling of 12135142 in words is "twelve million, one hundred thirty-five thousand, one hundred forty-two".