242254155561 has 16 divisors (see below), whose sum is σ = 353679618240. Its totient is φ = 146274893120.

The previous prime is 242254155541. The next prime is 242254155593. The reversal of 242254155561 is 165551452242.

It is a cyclic number.

It is not a de Polignac number, because 242254155561 - 2⁹ = 242254155049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242254155541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13636170 + ... + 13653923.

It is an arithmetic number, because the mean of its divisors is an integer number (22104976140).

Almost surely, 2^242254155561 is an apocalyptic number.

It is an amenable number.

242254155561 is a deficient number, since it is larger than the sum of its proper divisors (111425462679).

242254155561 is a wasteful number, since it uses less digits than its factorization.

242254155561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27290376.

The product of its digits is 480000, while the sum is 42.

The spelling of 242254155561 in words is "two hundred forty-two billion, two hundred fifty-four million, one hundred fifty-five thousand, five hundred sixty-one".