242489 has 8 divisors (see below), whose sum is σ = 272832. Its totient is φ = 213840.

The previous prime is 242483. The next prime is 242491. The reversal of 242489 is 984242.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107 + ... + 704.

It is an arithmetic number, because the mean of its divisors is an integer number (34104).

2²⁴²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

242489 is a deficient number, since it is larger than the sum of its proper divisors (30343).

242489 is a wasteful number, since it uses less digits than its factorization.

242489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847.

The product of its digits is 4608, while the sum is 29.

The square root of 242489 is about 492.4317211553. The cubic root of 242489 is about 62.3587423141.

The spelling of 242489 in words is "two hundred forty-two thousand, four hundred eighty-nine".