242915 has 8 divisors (see below), whose sum is σ = 306960. Its totient is φ = 184032.

The previous prime is 242911. The next prime is 242923. The reversal of 242915 is 519242.

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 242915 - 2² = 242911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242911) 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, 1184 + ... + 1373.

It is an arithmetic number, because the mean of its divisors is an integer number (38370).

2²⁴²⁹¹⁵ is an apocalyptic number.

242915 is a deficient number, since it is larger than the sum of its proper divisors (64045).

242915 is a wasteful number, since it uses less digits than its factorization.

242915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2581.

The product of its digits is 720, while the sum is 23.

The square root of 242915 is about 492.8640786261. The cubic root of 242915 is about 62.3952378297.

The spelling of 242915 in words is "two hundred forty-two thousand, nine hundred fifteen".