242542187 has 8 divisors (see below), whose sum is σ = 245145600. Its totient is φ = 239949864.

The previous prime is 242542147. The next prime is 242542189. The reversal of 242542187 is 781245242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242542187 - 2⁸ = 242541931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242542189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45614 + ... + 50652.

It is an arithmetic number, because the mean of its divisors is an integer number (30643200).

Almost surely, 2^242542187 is an apocalyptic number.

242542187 is a deficient number, since it is larger than the sum of its proper divisors (2603413).

242542187 is a wasteful number, since it uses less digits than its factorization.

242542187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5545.

The product of its digits is 35840, while the sum is 35.

The square root of 242542187 is about 15573.7659864273. The cubic root of 242542187 is about 623.6330119028.

It can be divided in two parts, 242542 and 187, that multiplied together give a palindrome (45355354).

The spelling of 242542187 in words is "two hundred forty-two million, five hundred forty-two thousand, one hundred eighty-seven".