242587188 has 18 divisors (see below), whose sum is σ = 613206594. Its totient is φ = 80862384.

The previous prime is 242587181. The next prime is 242587199. The reversal of 242587188 is 881785242.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 242051364 + 535824 = 15558^2 + 732^2 .

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

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242587181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3369231 + ... + 3369302.

It is an arithmetic number, because the mean of its divisors is an integer number (34067033).

Almost surely, 2^242587188 is an apocalyptic number.

It is an amenable number.

242587188 is an abundant number, since it is smaller than the sum of its proper divisors (370619406).

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

242587188 is a wasteful number, since it uses less digits than its factorization.

242587188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6738543 (or 6738538 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 242587188 is about 15575.2106887836. The cubic root of 242587188 is about 623.6715789029.

The spelling of 242587188 in words is "two hundred forty-two million, five hundred eighty-seven thousand, one hundred eighty-eight".