242024621 has 2 divisors, whose sum is σ = 242024622. Its totient is φ = 242024620.

The previous prime is 242024609. The next prime is 242024623. The reversal of 242024621 is 126420242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160934596 + 81090025 = 12686^2 + 9005^2 .

It is a cyclic number.

It is not a de Polignac number, because 242024621 - 2¹⁰ = 242023597 is a prime.

It is a Sophie Germain prime.

Together with 242024623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242024623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121012310 + 121012311.

It is an arithmetic number, because the mean of its divisors is an integer number (121012311).

Almost surely, 2^242024621 is an apocalyptic number.

It is an amenable number.

242024621 is a deficient number, since it is larger than the sum of its proper divisors (1).

242024621 is an equidigital number, since it uses as much as digits as its factorization.

242024621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 242024621 is about 15557.1405148890. The cubic root of 242024621 is about 623.1891013547.

Adding to 242024621 its reverse (126420242), we get a palindrome (368444863).

The spelling of 242024621 in words is "two hundred forty-two million, twenty-four thousand, six hundred twenty-one".