242527261 has 4 divisors (see below), whose sum is σ = 250890300. Its totient is φ = 234164224.

The previous prime is 242527247. The next prime is 242527273. The reversal of 242527261 is 162725242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 162725242 = 2 ⋅81362621.

It can be written as a sum of positive squares in 2 ways, for example, as 63904036 + 178623225 = 7994^2 + 13365^2 .

It is a cyclic number.

It is not a de Polignac number, because 242527261 - 2⁷ = 242527133 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 (242527231) 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, 4181476 + ... + 4181533.

It is an arithmetic number, because the mean of its divisors is an integer number (62722575).

Almost surely, 2^242527261 is an apocalyptic number.

It is an amenable number.

242527261 is a deficient number, since it is larger than the sum of its proper divisors (8363039).

242527261 is an equidigital number, since it uses as much as digits as its factorization.

242527261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8363038.

The product of its digits is 13440, while the sum is 31.

The square root of 242527261 is about 15573.2867757580. The cubic root of 242527261 is about 623.6202188881.

It can be divided in two parts, 24252 and 7261, that added together give a palindrome (31513).

The spelling of 242527261 in words is "two hundred forty-two million, five hundred twenty-seven thousand, two hundred sixty-one".