242120044213 has 4 divisors (see below), whose sum is σ = 246688346988. Its totient is φ = 237551741440.

The previous prime is 242120044211. The next prime is 242120044219. The reversal of 242120044213 is 312440021242.

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 160930950244 + 81189093969 = 401162^2 + 284937^2 .

It is a cyclic number.

It is not a de Polignac number, because 242120044213 - 2¹ = 242120044211 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 (242120044211) 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, 2284151308 + ... + 2284151413.

It is an arithmetic number, because the mean of its divisors is an integer number (61672086747).

Almost surely, 2^242120044213 is an apocalyptic number.

It is an amenable number.

242120044213 is a deficient number, since it is larger than the sum of its proper divisors (4568302775).

242120044213 is an equidigital number, since it uses as much as digits as its factorization.

242120044213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4568302774.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 242120044213 its reverse (312440021242), we get a palindrome (554560065455).

The spelling of 242120044213 in words is "two hundred forty-two billion, one hundred twenty million, forty-four thousand, two hundred thirteen".