242203261 has 2 divisors, whose sum is σ = 242203262. Its totient is φ = 242203260.

The previous prime is 242203253. The next prime is 242203303. The reversal of 242203261 is 162302242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168844036 + 73359225 = 12994^2 + 8565^2 .

It is a cyclic number.

It is not a de Polignac number, because 242203261 - 2³ = 242203253 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242003261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121101630 + 121101631.

It is an arithmetic number, because the mean of its divisors is an integer number (121101631).

Almost surely, 2^242203261 is an apocalyptic number.

It is an amenable number.

242203261 is a deficient number, since it is larger than the sum of its proper divisors (1).

242203261 is an equidigital number, since it uses as much as digits as its factorization.

242203261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 242203261 is about 15562.8808708414. The cubic root of 242203261 is about 623.3423903349.

The spelling of 242203261 in words is "two hundred forty-two million, two hundred three thousand, two hundred sixty-one".