12427529 has 4 divisors (see below), whose sum is σ = 12449940. Its totient is φ = 12405120.

The previous prime is 12427511. The next prime is 12427579. The reversal of 12427529 is 92572421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92572421 = 43 ⋅2152847.

It can be written as a sum of positive squares in 2 ways, for example, as 559504 + 11868025 = 748^2 + 3445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12427529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12427495 and 12427504.

It is not an unprimeable number, because it can be changed into a prime (12427579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10352 + ... + 11489.

It is an arithmetic number, because the mean of its divisors is an integer number (3112485).

Almost surely, 2^12427529 is an apocalyptic number.

It is an amenable number.

12427529 is a deficient number, since it is larger than the sum of its proper divisors (22411).

12427529 is an equidigital number, since it uses as much as digits as its factorization.

12427529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22410.

The product of its digits is 10080, while the sum is 32.

The square root of 12427529 is about 3525.2700605769. The cubic root of 12427529 is about 231.6300646646.

The spelling of 12427529 in words is "twelve million, four hundred twenty-seven thousand, five hundred twenty-nine".