242124004121 has 2 divisors, whose sum is σ = 242124004122. Its totient is φ = 242124004120.

The previous prime is 242124004117. The next prime is 242124004123. The reversal of 242124004121 is 121400421242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209364814096 + 32759190025 = 457564^2 + 180995^2 .

It is a cyclic number.

It is not a de Polignac number, because 242124004121 - 2² = 242124004117 is a prime.

It is a Sophie Germain prime.

Together with 242124004123, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (242124004123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121062002060 + 121062002061.

It is an arithmetic number, because the mean of its divisors is an integer number (121062002061).

Almost surely, 2^242124004121 is an apocalyptic number.

It is an amenable number.

242124004121 is a deficient number, since it is larger than the sum of its proper divisors (1).

242124004121 is an equidigital number, since it uses as much as digits as its factorization.

242124004121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 242124004121 its reverse (121400421242), we get a palindrome (363524425363).

The spelling of 242124004121 in words is "two hundred forty-two billion, one hundred twenty-four million, four thousand, one hundred twenty-one".