242588 has 6 divisors (see below), whose sum is σ = 424536. Its totient is φ = 121292.

The previous prime is 242551. The next prime is 242591. The reversal of 242588 is 885242.

It is a self number, because there is not a number n which added to its sum of digits gives 242588.

It is a congruent number.

It is an unprimeable number.

242588 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 30320 + ... + 30327.

It is an arithmetic number, because the mean of its divisors is an integer number (70756).

2²⁴²⁵⁸⁸ is an apocalyptic number.

It is an amenable number.

242588 is a deficient number, since it is larger than the sum of its proper divisors (181948).

242588 is a wasteful number, since it uses less digits than its factorization.

242588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60651 (or 60649 counting only the distinct ones).

The product of its digits is 5120, while the sum is 29.

The square root of 242588 is about 492.5322324478. The cubic root of 242588 is about 62.3672274764.

The spelling of 242588 in words is "two hundred forty-two thousand, five hundred eighty-eight".