242242261 has 4 divisors (see below), whose sum is σ = 242282124. Its totient is φ = 242202400.

The previous prime is 242242243. The next prime is 242242291. The reversal of 242242261 is 162242242.

242242261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 182412036 + 59830225 = 13506^2 + 7735^2 .

It is a cyclic number.

It is not a de Polignac number, because 242242261 - 2⁹ = 242241749 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 (242242201) 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, 8710 + ... + 23671.

It is an arithmetic number, because the mean of its divisors is an integer number (60570531).

Almost surely, 2^242242261 is an apocalyptic number.

It is an amenable number.

242242261 is a deficient number, since it is larger than the sum of its proper divisors (39863).

242242261 is an equidigital number, since it uses as much as digits as its factorization.

242242261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39862.

The product of its digits is 3072, while the sum is 25.

The square root of 242242261 is about 15564.1338017893. The cubic root of 242242261 is about 623.3758457728.

The spelling of 242242261 in words is "two hundred forty-two million, two hundred forty-two thousand, two hundred sixty-one".