242041245121 has 4 divisors (see below), whose sum is σ = 260659802452. Its totient is φ = 223422687792.

The previous prime is 242041245037. The next prime is 242041245161. The reversal of 242041245121 is 121542140242.

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 83426234896 + 158615010225 = 288836^2 + 398265^2 .

It is a cyclic number.

It is not a de Polignac number, because 242041245121 - 2¹³ = 242041236929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242041245121.

It is not an unprimeable number, because it can be changed into a prime (242041245161) 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, 9309278646 + ... + 9309278671.

It is an arithmetic number, because the mean of its divisors is an integer number (65164950613).

Almost surely, 2^242041245121 is an apocalyptic number.

It is an amenable number.

242041245121 is a deficient number, since it is larger than the sum of its proper divisors (18618557331).

242041245121 is a wasteful number, since it uses less digits than its factorization.

242041245121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18618557330.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 242041245121 its reverse (121542140242), we get a palindrome (363583385363).

The spelling of 242041245121 in words is "two hundred forty-two billion, forty-one million, two hundred forty-five thousand, one hundred twenty-one".