39243 has 8 divisors (see below), whose sum is σ = 53248. Its totient is φ = 25704.

The previous prime is 39241. The next prime is 39251. The reversal of 39243 is 34293.

Added to its reverse (34293) it gives a triangular number (73536 = T₃₈₃).

39243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39243 - 2¹ = 39241 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 (39241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246 + ... + 372.

It is an arithmetic number, because the mean of its divisors is an integer number (6656).

2³⁹²⁴³ is an apocalyptic number.

39243 is a deficient number, since it is larger than the sum of its proper divisors (14005).

39243 is a wasteful number, since it uses less digits than its factorization.

39243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233.

The product of its digits is 648, while the sum is 21.

The square root of 39243 is about 198.0984603676. The cubic root of 39243 is about 33.9824015038.

Adding to 39243 its reverse (34293), we get a triangular number (73536 = T₃₈₃).

Subtracting from 39243 its reverse (34293), we obtain a triangular number (4950 = T₉₉).

It can be divided in two parts, 392 and 43, that added together give a triangular number (435 = T₂₉).

The spelling of 39243 in words is "thirty-nine thousand, two hundred forty-three".