242435331557 has 2 divisors, whose sum is σ = 242435331558. Its totient is φ = 242435331556.

The previous prime is 242435331503. The next prime is 242435331571. The reversal of 242435331557 is 755133534242.

It is a happy number.

242435331557 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., 186443467681 + 55991863876 = 431791^2 + 236626^2 .

It is a cyclic number.

It is not a de Polignac number, because 242435331557 - 2¹² = 242435327461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242435331857) 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, 121217665778 + 121217665779.

It is an arithmetic number, because the mean of its divisors is an integer number (121217665779).

Almost surely, 2^242435331557 is an apocalyptic number.

It is an amenable number.

242435331557 is a deficient number, since it is larger than the sum of its proper divisors (1).

242435331557 is an equidigital number, since it uses as much as digits as its factorization.

242435331557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512000, while the sum is 44.

Adding to 242435331557 its reverse (755133534242), we get a palindrome (997568865799).

The spelling of 242435331557 in words is "two hundred forty-two billion, four hundred thirty-five million, three hundred thirty-one thousand, five hundred fifty-seven".