242439 has 8 divisors (see below), whose sum is σ = 325632. Its totient is φ = 160440.

The previous prime is 242419. The next prime is 242441. The reversal of 242439 is 934242.

It is a happy number.

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

It is not a de Polignac number, because 242439 - 2¹⁶ = 176903 is a prime.

242439 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442 + ... + 824.

It is an arithmetic number, because the mean of its divisors is an integer number (40704).

2²⁴²⁴³⁹ is an apocalyptic number.

242439 is a deficient number, since it is larger than the sum of its proper divisors (83193).

242439 is a wasteful number, since it uses less digits than its factorization.

242439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597.

The product of its digits is 1728, while the sum is 24.

The square root of 242439 is about 492.3809500783. The cubic root of 242439 is about 62.3544560009.

The spelling of 242439 in words is "two hundred forty-two thousand, four hundred thirty-nine".