13240429 has 4 divisors (see below), whose sum is σ = 13248576. Its totient is φ = 13232284.

The previous prime is 13240421. The next prime is 13240453. The reversal of 13240429 is 92404231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92404231 = 17 ⋅5435543.

It is a cyclic number.

It is not a de Polignac number, because 13240429 - 2³ = 13240421 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 (13240421) 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, 709 + ... + 5194.

It is an arithmetic number, because the mean of its divisors is an integer number (3312144).

Almost surely, 2^13240429 is an apocalyptic number.

It is an amenable number.

13240429 is a deficient number, since it is larger than the sum of its proper divisors (8147).

13240429 is an equidigital number, since it uses as much as digits as its factorization.

13240429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8146.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 13240429 is about 3638.7400291859. The cubic root of 13240429 is about 236.5741848095.

The spelling of 13240429 in words is "thirteen million, two hundred forty thousand, four hundred twenty-nine".