242834393 has 4 divisors (see below), whose sum is σ = 247416228. Its totient is φ = 238252560.

The previous prime is 242834381. The next prime is 242834399. The reversal of 242834393 is 393438242.

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

It can be written as a sum of positive squares in 2 ways, for example, as 92698384 + 150136009 = 9628^2 + 12253^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242834393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242834399) 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, 2290838 + ... + 2290943.

It is an arithmetic number, because the mean of its divisors is an integer number (61854057).

Almost surely, 2^242834393 is an apocalyptic number.

It is an amenable number.

242834393 is a deficient number, since it is larger than the sum of its proper divisors (4581835).

242834393 is an equidigital number, since it uses as much as digits as its factorization.

242834393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4581834.

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

The square root of 242834393 is about 15583.1445157901. The cubic root of 242834393 is about 623.8833548472.

The spelling of 242834393 in words is "two hundred forty-two million, eight hundred thirty-four thousand, three hundred ninety-three".