242647249 has 8 divisors (see below), whose sum is σ = 261436392. Its totient is φ = 223875840.

The previous prime is 242647247. The next prime is 242647253. The reversal of 242647249 is 942746242.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 23814400 + 218832849 = 4880^2 + 14793^2 .

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 242647249 - 2¹ = 242647247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242647241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42297 + ... + 47689.

It is an arithmetic number, because the mean of its divisors is an integer number (32679549).

Almost surely, 2^242647249 is an apocalyptic number.

It is an amenable number.

242647249 is a deficient number, since it is larger than the sum of its proper divisors (18789143).

242647249 is a wasteful number, since it uses less digits than its factorization.

242647249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8867.

The product of its digits is 193536, while the sum is 40.

The square root of 242647249 is about 15577.1386653647. The cubic root of 242647249 is about 623.7230452754.

It can be divided in two parts, 24264 and 7249, that added together give a palindrome (31513).

The spelling of 242647249 in words is "two hundred forty-two million, six hundred forty-seven thousand, two hundred forty-nine".