12134387 has 4 divisors (see below), whose sum is σ = 12207216. Its totient is φ = 12061560.

The previous prime is 12134377. The next prime is 12134389. The reversal of 12134387 is 78343121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12134387 - 2⁴ = 12134371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12134389) 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, 36164 + ... + 36497.

It is an arithmetic number, because the mean of its divisors is an integer number (3051804).

Almost surely, 2^12134387 is an apocalyptic number.

12134387 is a deficient number, since it is larger than the sum of its proper divisors (72829).

12134387 is an equidigital number, since it uses as much as digits as its factorization.

12134387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72828.

The product of its digits is 4032, while the sum is 29.

The square root of 12134387 is about 3483.4447031638. Note that the first 3 decimals coincide. The cubic root of 12134387 is about 229.7943151694.

It can be divided in two parts, 12134 and 387, that added together give a palindrome (12521).

The spelling of 12134387 in words is "twelve million, one hundred thirty-four thousand, three hundred eighty-seven".