242438 has 8 divisors (see below), whose sum is σ = 415632. Its totient is φ = 103896.

The previous prime is 242419. The next prime is 242441. The reversal of 242438 is 834242.

242438 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 242438.

It is an unprimeable number.

242438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8645 + ... + 8672.

It is an arithmetic number, because the mean of its divisors is an integer number (51954).

2²⁴²⁴³⁸ is an apocalyptic number.

242438 is a deficient number, since it is larger than the sum of its proper divisors (173194).

242438 is a wasteful number, since it uses less digits than its factorization.

242438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17326.

The product of its digits is 1536, while the sum is 23.

The square root of 242438 is about 492.3799346034. The cubic root of 242438 is about 62.3543702686.

The spelling of 242438 in words is "two hundred forty-two thousand, four hundred thirty-eight".