12487429 has 4 divisors (see below), whose sum is σ = 12918060. Its totient is φ = 12056800.

The previous prime is 12487421. The next prime is 12487483. The reversal of 12487429 is 92478421.

12487429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3348900 + 9138529 = 1830^2 + 3023^2 .

It is a cyclic number.

It is not a de Polignac number, because 12487429 - 2³ = 12487421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12487421) 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, 215272 + ... + 215329.

It is an arithmetic number, because the mean of its divisors is an integer number (3229515).

Almost surely, 2^12487429 is an apocalyptic number.

It is an amenable number.

12487429 is a deficient number, since it is larger than the sum of its proper divisors (430631).

12487429 is an equidigital number, since it uses as much as digits as its factorization.

12487429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430630.

The product of its digits is 32256, while the sum is 37.

The square root of 12487429 is about 3533.7556508621. The cubic root of 12487429 is about 232.0016163680.

The spelling of 12487429 in words is "twelve million, four hundred eighty-seven thousand, four hundred twenty-nine".