242408 has 16 divisors (see below), whose sum is σ = 459780. Its totient is φ = 119808.

The previous prime is 242399. The next prime is 242413. The reversal of 242408 is 804242.

242408 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 228484 + 13924 = 478^2 + 118^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 242408.

It is a congruent number.

It is an unprimeable number.

242408 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, 1160 + ... + 1352.

2²⁴²⁴⁰⁸ is an apocalyptic number.

It is an amenable number.

242408 is a deficient number, since it is larger than the sum of its proper divisors (217372).

242408 is a wasteful number, since it uses less digits than its factorization.

242408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 242408 is about 492.3494693813. The cubic root of 242408 is about 62.3517981907.

The spelling of 242408 in words is "two hundred forty-two thousand, four hundred eight".