242092561 has 4 divisors (see below), whose sum is σ = 242163712. Its totient is φ = 242021412.

The previous prime is 242092559. The next prime is 242092573. The reversal of 242092561 is 165290242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 242092561 - 2¹ = 242092559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242032561) 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, 30201 + ... + 37366.

It is an arithmetic number, because the mean of its divisors is an integer number (60540928).

Almost surely, 2^242092561 is an apocalyptic number.

It is an amenable number.

242092561 is a deficient number, since it is larger than the sum of its proper divisors (71151).

242092561 is an equidigital number, since it uses as much as digits as its factorization.

242092561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71150.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 242092561 is about 15559.3239249011. The cubic root of 242092561 is about 623.2474087922.

The spelling of 242092561 in words is "two hundred forty-two million, ninety-two thousand, five hundred sixty-one".