12429147 has 4 divisors (see below), whose sum is σ = 16572200. Its totient is φ = 8286096.

The previous prime is 12429143. The next prime is 12429163. The reversal of 12429147 is 74192421.

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

It is not a de Polignac number, because 12429147 - 2² = 12429143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12429143) 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, 2071522 + ... + 2071527.

It is an arithmetic number, because the mean of its divisors is an integer number (4143050).

Almost surely, 2^12429147 is an apocalyptic number.

12429147 is a deficient number, since it is larger than the sum of its proper divisors (4143053).

12429147 is an equidigital number, since it uses as much as digits as its factorization.

12429147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4143052.

The product of its digits is 4032, while the sum is 30.

The square root of 12429147 is about 3525.4995390724. The cubic root of 12429147 is about 231.6401165739.

The spelling of 12429147 in words is "twelve million, four hundred twenty-nine thousand, one hundred forty-seven".