242187 has 16 divisors (see below), whose sum is σ = 362880. Its totient is φ = 142400.

The previous prime is 242173. The next prime is 242197. The reversal of 242187 is 781242.

242187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 242187 - 2⁴ = 242171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242147) 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, 1264 + ... + 1442.

It is an arithmetic number, because the mean of its divisors is an integer number (22680).

2²⁴²¹⁸⁷ is an apocalyptic number.

242187 is a deficient number, since it is larger than the sum of its proper divisors (120693).

242187 is a wasteful number, since it uses less digits than its factorization.

242187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234.

The product of its digits is 896, while the sum is 24.

The square root of 242187 is about 492.1249841250. The cubic root of 242187 is about 62.3328440072.

It can be divided in two parts, 242 and 187, that multiplied together give a palindrome (45254).

The spelling of 242187 in words is "two hundred forty-two thousand, one hundred eighty-seven".