242388 has 18 divisors (see below), whose sum is σ = 612794. Its totient is φ = 80784.

The previous prime is 242377. The next prime is 242393. The reversal of 242388 is 883242.

It can be written as a sum of positive squares in only one way, i.e., 242064 + 324 = 492^2 + 18^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a nialpdrome in base 12 and base 13.

It is a zygodrome in base 3.

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 242388.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3331 + ... + 3402.

2²⁴²³⁸⁸ is an apocalyptic number.

It is an amenable number.

242388 is an abundant number, since it is smaller than the sum of its proper divisors (370406).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

242388 is a wasteful number, since it uses less digits than its factorization.

242388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6743 (or 6738 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

The square root of 242388 is about 492.3291581859. The cubic root of 242388 is about 62.3500833542.

It can be divided in two parts, 242 and 388, that added together give a triangular number (630 = T₃₅).

The spelling of 242388 in words is "two hundred forty-two thousand, three hundred eighty-eight".