242702528557 has 2 divisors, whose sum is σ = 242702528558. Its totient is φ = 242702528556.

The previous prime is 242702528479. The next prime is 242702528581. The reversal of 242702528557 is 755825207242.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198055261156 + 44647267401 = 445034^2 + 211299^2 .

It is a cyclic number.

It is not a de Polignac number, because 242702528557 - 2⁷ = 242702528429 is a prime.

It is a super-2 number, since 2×242702528557² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 242702528557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242702598557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121351264278 + 121351264279.

It is an arithmetic number, because the mean of its divisors is an integer number (121351264279).

Almost surely, 2^242702528557 is an apocalyptic number.

It is an amenable number.

242702528557 is a deficient number, since it is larger than the sum of its proper divisors (1).

242702528557 is an equidigital number, since it uses as much as digits as its factorization.

242702528557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136000, while the sum is 49.

The spelling of 242702528557 in words is "two hundred forty-two billion, seven hundred two million, five hundred twenty-eight thousand, five hundred fifty-seven".