242838769 has 2 divisors, whose sum is σ = 242838770. Its totient is φ = 242838768.

The previous prime is 242838767. The next prime is 242838781. The reversal of 242838769 is 967838242.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187142400 + 55696369 = 13680^2 + 7463^2 .

It is a cyclic number.

It is not a de Polignac number, because 242838769 - 2¹ = 242838767 is a prime.

It is a super-2 number, since 2×242838769² = 117941335458870722, which contains 22 as substring.

Together with 242838767, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (242838767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121419384 + 121419385.

It is an arithmetic number, because the mean of its divisors is an integer number (121419385).

Almost surely, 2^242838769 is an apocalyptic number.

It is an amenable number.

242838769 is a deficient number, since it is larger than the sum of its proper divisors (1).

242838769 is an equidigital number, since it uses as much as digits as its factorization.

242838769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The square root of 242838769 is about 15583.2849232760. The cubic root of 242838769 is about 623.8871023905.

The spelling of 242838769 in words is "two hundred forty-two million, eight hundred thirty-eight thousand, seven hundred sixty-nine".