242663369 has 4 divisors (see below), whose sum is σ = 261329796. Its totient is φ = 223996944.

The previous prime is 242663359. The next prime is 242663417. The reversal of 242663369 is 963366242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 963366242 = 2 ⋅481683121.

It can be written as a sum of positive squares in 2 ways, for example, as 87984400 + 154678969 = 9380^2 + 12437^2 .

It is a cyclic number.

It is not a de Polignac number, because 242663369 - 2¹² = 242659273 is a prime.

It is a super-2 number, since 2×242663369² = 117771021308860322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (242663359) 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 in 3 ways as a sum of consecutive naturals, for example, 9333194 + ... + 9333219.

It is an arithmetic number, because the mean of its divisors is an integer number (65332449).

Almost surely, 2^242663369 is an apocalyptic number.

It is an amenable number.

242663369 is a deficient number, since it is larger than the sum of its proper divisors (18666427).

242663369 is a wasteful number, since it uses less digits than its factorization.

242663369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18666426.

The product of its digits is 279936, while the sum is 41.

The square root of 242663369 is about 15577.6560817088. The cubic root of 242663369 is about 623.7368570851.

The spelling of 242663369 in words is "two hundred forty-two million, six hundred sixty-three thousand, three hundred sixty-nine".