242743389 has 8 divisors (see below), whose sum is σ = 369894720. Its totient is φ = 138710496.

The previous prime is 242743387. The next prime is 242743399. The reversal of 242743389 is 983347242.

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

It is not a de Polignac number, because 242743389 - 2¹ = 242743387 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 242743389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242743381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5779584 + ... + 5779625.

It is an arithmetic number, because the mean of its divisors is an integer number (46236840).

Almost surely, 2^242743389 is an apocalyptic number.

It is an amenable number.

242743389 is a deficient number, since it is larger than the sum of its proper divisors (127151331).

242743389 is a wasteful number, since it uses less digits than its factorization.

242743389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11559219.

The product of its digits is 290304, while the sum is 42.

The square root of 242743389 is about 15580.2242923521. The cubic root of 242743389 is about 623.8054101294.

The spelling of 242743389 in words is "two hundred forty-two million, seven hundred forty-three thousand, three hundred eighty-nine".