242618533 has 4 divisors (see below), whose sum is σ = 246595948. Its totient is φ = 238641120.

The previous prime is 242618531. The next prime is 242618557. The reversal of 242618533 is 335816242.

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 103897249 + 138721284 = 10193^2 + 11778^2 .

It is a cyclic number.

It is not a de Polignac number, because 242618533 - 2¹ = 242618531 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 (242618531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1988616 + ... + 1988737.

It is an arithmetic number, because the mean of its divisors is an integer number (61648987).

Almost surely, 2^242618533 is an apocalyptic number.

It is an amenable number.

242618533 is a deficient number, since it is larger than the sum of its proper divisors (3977415).

242618533 is an equidigital number, since it uses as much as digits as its factorization.

242618533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3977414.

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

The square root of 242618533 is about 15576.2169027014. The cubic root of 242618533 is about 623.6984395461.

The spelling of 242618533 in words is "two hundred forty-two million, six hundred eighteen thousand, five hundred thirty-three".