12538429 has 4 divisors (see below), whose sum is σ = 12592476. Its totient is φ = 12484384.

The previous prime is 12538417. The next prime is 12538433. The reversal of 12538429 is 92483521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92483521 = 13 ⋅7114117.

It can be written as a sum of positive squares in 2 ways, for example, as 4687225 + 7851204 = 2165^2 + 2802^2 .

It is a cyclic number.

It is not a de Polignac number, because 12538429 - 2⁵ = 12538397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12538394 and 12538403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12538439) 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, 26674 + ... + 27139.

It is an arithmetic number, because the mean of its divisors is an integer number (3148119).

Almost surely, 2^12538429 is an apocalyptic number.

It is an amenable number.

12538429 is a deficient number, since it is larger than the sum of its proper divisors (54047).

12538429 is an equidigital number, since it uses as much as digits as its factorization.

12538429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54046.

The product of its digits is 17280, while the sum is 34.

The square root of 12538429 is about 3540.9644166526. The cubic root of 12538429 is about 232.3170271985.

The spelling of 12538429 in words is "twelve million, five hundred thirty-eight thousand, four hundred twenty-nine".