243342839 has 8 divisors (see below), whose sum is σ = 251712000. Its totient is φ = 235006200.

The previous prime is 243342817. The next prime is 243342851. The reversal of 243342839 is 938243342.

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

It is a cyclic number.

It is not a de Polignac number, because 243342839 - 2¹² = 243338743 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 (243342809) 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, 7604 + ... + 23334.

It is an arithmetic number, because the mean of its divisors is an integer number (31464000).

Almost surely, 2^243342839 is an apocalyptic number.

243342839 is a deficient number, since it is larger than the sum of its proper divisors (8369161).

243342839 is a wasteful number, since it uses less digits than its factorization.

243342839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16261.

The product of its digits is 124416, while the sum is 38.

The square root of 243342839 is about 15599.4499582517. The cubic root of 243342839 is about 624.3184797317.

The spelling of 243342839 in words is "two hundred forty-three million, three hundred forty-two thousand, eight hundred thirty-nine".