242150531209 has 4 divisors (see below), whose sum is σ = 242223274260. Its totient is φ = 242077788160.

The previous prime is 242150531201. The next prime is 242150531237. The reversal of 242150531209 is 902135051242.

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 49218753609 + 192931777600 = 221853^2 + 439240^2 .

It is a cyclic number.

It is not a de Polignac number, because 242150531209 - 2³ = 242150531201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242150531201) 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, 36366532 + ... + 36373189.

It is an arithmetic number, because the mean of its divisors is an integer number (60555818565).

Almost surely, 2^242150531209 is an apocalyptic number.

It is an amenable number.

242150531209 is a deficient number, since it is larger than the sum of its proper divisors (72743051).

242150531209 is an equidigital number, since it uses as much as digits as its factorization.

242150531209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72743050.

The product of its (nonzero) digits is 21600, while the sum is 34.

The spelling of 242150531209 in words is "two hundred forty-two billion, one hundred fifty million, five hundred thirty-one thousand, two hundred nine".