242140440461 has 2 divisors, whose sum is σ = 242140440462. Its totient is φ = 242140440460.

The previous prime is 242140440431. The next prime is 242140440463. The reversal of 242140440461 is 164044041242.

242140440461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242113202500 + 27237961 = 492050^2 + 5219^2 .

It is a cyclic number.

It is not a de Polignac number, because 242140440461 - 2¹⁴ = 242140424077 is a prime.

Together with 242140440463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242140440463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121070220230 + 121070220231.

It is an arithmetic number, because the mean of its divisors is an integer number (121070220231).

Almost surely, 2^242140440461 is an apocalyptic number.

It is an amenable number.

242140440461 is a deficient number, since it is larger than the sum of its proper divisors (1).

242140440461 is an equidigital number, since it uses as much as digits as its factorization.

242140440461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24576, while the sum is 32.

The spelling of 242140440461 in words is "two hundred forty-two billion, one hundred forty million, four hundred forty thousand, four hundred sixty-one".