242581869 has 12 divisors (see below), whose sum is σ = 350594400. Its totient is φ = 161629704.

The previous prime is 242581849. The next prime is 242581921. The reversal of 242581869 is 968185242.

242581869 is a `hidden beast` number, since 2 + 4 + 2 + 581 + 8 + 69 = 666.

It is not a de Polignac number, because 242581869 - 2⁹ = 242581357 is a prime.

It is a super-2 number, since 2×242581869² = 117691926335066322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242581849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11742 + ... + 24960.

It is an arithmetic number, because the mean of its divisors is an integer number (29216200).

Almost surely, 2^242581869 is an apocalyptic number.

It is an amenable number.

242581869 is a deficient number, since it is larger than the sum of its proper divisors (108012531).

242581869 is a wasteful number, since it uses less digits than its factorization.

242581869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15264 (or 15261 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 242581869 is about 15575.0399357433. The cubic root of 242581869 is about 623.6670206334.

The spelling of 242581869 in words is "two hundred forty-two million, five hundred eighty-one thousand, eight hundred sixty-nine".