242939 has 4 divisors (see below), whose sum is σ = 243960. Its totient is φ = 241920.

The previous prime is 242927. The next prime is 242971. The reversal of 242939 is 939242.

242939 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 242939 - 2⁴ = 242923 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 4⁴ + 9⁵ + 2¹⁵ + 3¹⁰ + 9⁵ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59 + ... + 699.

It is an arithmetic number, because the mean of its divisors is an integer number (60990).

2²⁴²⁹³⁹ is an apocalyptic number.

242939 is a deficient number, since it is larger than the sum of its proper divisors (1021).

242939 is an equidigital number, since it uses as much as digits as its factorization.

242939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020.

The product of its digits is 3888, while the sum is 29.

The square root of 242939 is about 492.8884255082. Note that the first 3 decimals coincide. The cubic root of 242939 is about 62.3972926450.

The spelling of 242939 in words is "two hundred forty-two thousand, nine hundred thirty-nine".