12427547 has 8 divisors (see below), whose sum is σ = 13670832. Its totient is φ = 11296560.

The previous prime is 12427511. The next prime is 12427579. The reversal of 12427547 is 74572421.

It is not a de Polignac number, because 12427547 - 2⁶ = 12427483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12427147) 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 7 ways as a sum of consecutive naturals, for example, 3338 + ... + 5999.

It is an arithmetic number, because the mean of its divisors is an integer number (1708854).

Almost surely, 2^12427547 is an apocalyptic number.

12427547 is a deficient number, since it is larger than the sum of its proper divisors (1243285).

12427547 is an frugal number, since it uses more digits than its factorization.

12427547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9370 (or 9348 counting only the distinct ones).

The product of its digits is 15680, while the sum is 32.

The square root of 12427547 is about 3525.2726135719. The cubic root of 12427547 is about 231.6301764954.

Adding to 12427547 its reverse (74572421), we get a palindrome (86999968).

The spelling of 12427547 in words is "twelve million, four hundred twenty-seven thousand, five hundred forty-seven".