43247 has 4 divisors (see below), whose sum is σ = 44040. Its totient is φ = 42456.

The previous prime is 43237. The next prime is 43261. The reversal of 43247 is 74234.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74234 = 2 ⋅37117.

It is a cyclic number.

It is not a de Polignac number, because 43247 - 2¹⁰ = 42223 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43207) 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, 308 + ... + 425.

It is an arithmetic number, because the mean of its divisors is an integer number (11010).

2⁴³²⁴⁷ is an apocalyptic number.

43247 is a deficient number, since it is larger than the sum of its proper divisors (793).

43247 is an equidigital number, since it uses as much as digits as its factorization.

43247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792.

The product of its digits is 672, while the sum is 20.

The square root of 43247 is about 207.9591306002. The cubic root of 43247 is about 35.1009331386.

The spelling of 43247 in words is "forty-three thousand, two hundred forty-seven", and thus it is an iban number.