242646241 has 4 divisors (see below), whose sum is σ = 248564484. Its totient is φ = 236728000.

The previous prime is 242646223. The next prime is 242646281. The reversal of 242646241 is 142646242.

It is a happy number.

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 54819216 + 187827025 = 7404^2 + 13705^2 .

It is a cyclic number.

It is not a de Polignac number, because 242646241 - 2¹⁵ = 242613473 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242646211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2959060 + ... + 2959141.

It is an arithmetic number, because the mean of its divisors is an integer number (62141121).

Almost surely, 2^242646241 is an apocalyptic number.

It is an amenable number.

242646241 is a deficient number, since it is larger than the sum of its proper divisors (5918243).

242646241 is an equidigital number, since it uses as much as digits as its factorization.

242646241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5918242.

The product of its digits is 18432, while the sum is 31.

The square root of 242646241 is about 15577.1063102233. The cubic root of 242646241 is about 623.7221815886.

Subtracting from 242646241 its reverse (142646242), we obtain a palindrome (99999999).

The spelling of 242646241 in words is "two hundred forty-two million, six hundred forty-six thousand, two hundred forty-one".