242866 has 8 divisors (see below), whose sum is σ = 392364. Its totient is φ = 112080.

The previous prime is 242863. The next prime is 242867. The reversal of 242866 is 668242.

It can be written as a sum of positive squares in 2 ways, for example, as 221841 + 21025 = 471^2 + 145^2 .

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

It is not an unprimeable number, because it can be changed into a prime (242863) 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, 4645 + ... + 4696.

2²⁴²⁸⁶⁶ is an apocalyptic number.

242866 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

242866 is a deficient number, since it is larger than the sum of its proper divisors (149498).

242866 is a wasteful number, since it uses less digits than its factorization.

242866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9356.

The product of its digits is 4608, while the sum is 28.

The square root of 242866 is about 492.8143666737. The cubic root of 242866 is about 62.3910421614.

The spelling of 242866 in words is "two hundred forty-two thousand, eight hundred sixty-six".