242186533 has 4 divisors (see below), whose sum is σ = 244907820. Its totient is φ = 239465248.

The previous prime is 242186513. The next prime is 242186543. The reversal of 242186533 is 335681242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 159340129 + 82846404 = 12623^2 + 9102^2 .

It is a cyclic number.

It is not a de Polignac number, because 242186533 - 2⁵ = 242186501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242186513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1360510 + ... + 1360687.

It is an arithmetic number, because the mean of its divisors is an integer number (61226955).

Almost surely, 2^242186533 is an apocalyptic number.

It is an amenable number.

242186533 is a deficient number, since it is larger than the sum of its proper divisors (2721287).

242186533 is an equidigital number, since it uses as much as digits as its factorization.

242186533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2721286.

The product of its digits is 34560, while the sum is 34.

The square root of 242186533 is about 15562.3434289313. The cubic root of 242186533 is about 623.3280394249.

The spelling of 242186533 in words is "two hundred forty-two million, one hundred eighty-six thousand, five hundred thirty-three".