13842247 has 4 divisors (see below), whose sum is σ = 13864816. Its totient is φ = 13819680.

The previous prime is 13842239. The next prime is 13842281. The reversal of 13842247 is 74224831.

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

It is a cyclic number.

It is not a de Polignac number, because 13842247 - 2³ = 13842239 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 (13822247) 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, 10338 + ... + 11599.

It is an arithmetic number, because the mean of its divisors is an integer number (3466204).

Almost surely, 2^13842247 is an apocalyptic number.

13842247 is a deficient number, since it is larger than the sum of its proper divisors (22569).

13842247 is an equidigital number, since it uses as much as digits as its factorization.

13842247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22568.

The product of its digits is 10752, while the sum is 31.

The square root of 13842247 is about 3720.5170339618. The cubic root of 13842247 is about 240.1055496383.

The spelling of 13842247 in words is "thirteen million, eight hundred forty-two thousand, two hundred forty-seven".