12534387 has 4 divisors (see below), whose sum is σ = 16712520. Its totient is φ = 8356256.

The previous prime is 12534367. The next prime is 12534421. The reversal of 12534387 is 78343521.

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 12534387 - 2²⁰ = 11485811 is a prime.

It is a super-3 number, since 3×12534387³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (12534307) 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, 2089062 + ... + 2089067.

It is an arithmetic number, because the mean of its divisors is an integer number (4178130).

Almost surely, 2^12534387 is an apocalyptic number.

12534387 is a deficient number, since it is larger than the sum of its proper divisors (4178133).

12534387 is an equidigital number, since it uses as much as digits as its factorization.

12534387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178132.

The product of its digits is 20160, while the sum is 33.

The square root of 12534387 is about 3540.3936221838. The cubic root of 12534387 is about 232.2920605846.

It can be divided in two parts, 12534 and 387, that added together give a palindrome (12921).

The spelling of 12534387 in words is "twelve million, five hundred thirty-four thousand, three hundred eighty-seven".