242691382849 has 4 divisors (see below), whose sum is σ = 256967346564. Its totient is φ = 228415419136.

The previous prime is 242691382841. The next prime is 242691382853. The reversal of 242691382849 is 948283196242.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 205509902224 + 37181480625 = 453332^2 + 192825^2 .

It is a cyclic number.

It is not a de Polignac number, because 242691382849 - 2³ = 242691382841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242691382793 and 242691382802.

It is not an unprimeable number, because it can be changed into a prime (242691382841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7137981832 + ... + 7137981865.

It is an arithmetic number, because the mean of its divisors is an integer number (64241836641).

Almost surely, 2^242691382849 is an apocalyptic number.

It is an amenable number.

242691382849 is a deficient number, since it is larger than the sum of its proper divisors (14275963715).

242691382849 is a wasteful number, since it uses less digits than its factorization.

242691382849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14275963714.

The product of its digits is 11943936, while the sum is 58.

The spelling of 242691382849 in words is "two hundred forty-two billion, six hundred ninety-one million, three hundred eighty-two thousand, eight hundred forty-nine".