242209589 has 4 divisors (see below), whose sum is σ = 246180300. Its totient is φ = 238238880.

The previous prime is 242209577. The next prime is 242209607. The reversal of 242209589 is 985902242.

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 34128964 + 208080625 = 5842^2 + 14425^2 .

It is a cyclic number.

It is not a de Polignac number, because 242209589 - 2¹² = 242205493 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 (242209529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1985264 + ... + 1985385.

It is an arithmetic number, because the mean of its divisors is an integer number (61545075).

Almost surely, 2^242209589 is an apocalyptic number.

It is an amenable number.

242209589 is a deficient number, since it is larger than the sum of its proper divisors (3970711).

242209589 is an equidigital number, since it uses as much as digits as its factorization.

242209589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3970710.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 242209589 is about 15563.0841737748. The cubic root of 242209589 is about 623.3478189382.

The spelling of 242209589 in words is "two hundred forty-two million, two hundred nine thousand, five hundred eighty-nine".