242798318868169 has 9 divisors (see below), whose sum is σ = 243054928821063. Its totient is φ = 242541979600032.

The previous prime is 242798318868121. The next prime is 242798318868199. The reversal of 242798318868169 is 961868813897242.

The square root of 242798318868169 is 15581987.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 74522421573769 + 168275897294400 = 8632637^2 + 12972120^2 .

It is not a de Polignac number, because 242798318868169 - 2²⁹ = 242797781997257 is a prime.

It is a super-2 number, since 2×242798318868169² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242798318868092 and 242798318868101.

It is not an unprimeable number, because it can be changed into a prime (242798318868199) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 15722217162 + ... + 15722232604.

Almost surely, 2^{242798318868169} is an apocalyptic number.

242798318868169 is the 15581987-th square number.

242798318868169 is the 7790994-th centered octagonal number.

It is an amenable number.

242798318868169 is a deficient number, since it is larger than the sum of its proper divisors (256609952894).

242798318868169 is an frugal number, since it uses more digits than its factorization.

242798318868169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32904 (or 16452 counting only the distinct ones).

The product of its digits is 4013162496, while the sum is 82.

The spelling of 242798318868169 in words is "two hundred forty-two trillion, seven hundred ninety-eight billion, three hundred eighteen million, eight hundred sixty-eight thousand, one hundred sixty-nine".