242011043557 has 2 divisors, whose sum is σ = 242011043558. Its totient is φ = 242011043556.

The previous prime is 242011043507. The next prime is 242011043569. The reversal of 242011043557 is 755340110242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241381585636 + 629457921 = 491306^2 + 25089^2 .

It is a cyclic number.

It is not a de Polignac number, because 242011043557 - 2¹¹ = 242011041509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242011043507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121005521778 + 121005521779.

It is an arithmetic number, because the mean of its divisors is an integer number (121005521779).

Almost surely, 2^242011043557 is an apocalyptic number.

It is an amenable number.

242011043557 is a deficient number, since it is larger than the sum of its proper divisors (1).

242011043557 is an equidigital number, since it uses as much as digits as its factorization.

242011043557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 34.

Adding to 242011043557 its reverse (755340110242), we get a palindrome (997351153799).

The spelling of 242011043557 in words is "two hundred forty-two billion, eleven million, forty-three thousand, five hundred fifty-seven".