242322200423557 has 2 divisors, whose sum is σ = 242322200423558. Its totient is φ = 242322200423556.

The previous prime is 242322200423399. The next prime is 242322200423581. The reversal of 242322200423557 is 755324002223242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197428099929921 + 44894100493636 = 14050911^2 + 6700306^2 .

It is a cyclic number.

It is not a de Polignac number, because 242322200423557 - 2³⁹ = 241772444609669 is a prime.

It is a super-2 number, since 2×242322200423557² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242322200433557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121161100211778 + 121161100211779.

It is an arithmetic number, because the mean of its divisors is an integer number (121161100211779).

Almost surely, 2^{242322200423557} is an apocalyptic number.

It is an amenable number.

242322200423557 is a deficient number, since it is larger than the sum of its proper divisors (1).

242322200423557 is an equidigital number, since it uses as much as digits as its factorization.

242322200423557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1612800, while the sum is 43.

Adding to 242322200423557 its reverse (755324002223242), we get a palindrome (997646202646799).

The spelling of 242322200423557 in words is "two hundred forty-two trillion, three hundred twenty-two billion, two hundred million, four hundred twenty-three thousand, five hundred fifty-seven".