242664869 has 8 divisors (see below), whose sum is σ = 252469248. Its totient is φ = 232984080.

The previous prime is 242664857. The next prime is 242664887. The reversal of 242664869 is 968466242.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242664869 - 2¹² = 242660773 is a prime.

It is a super-2 number, since 2×242664869² = 117772477293574322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242664769) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26882 + ... + 34755.

It is an arithmetic number, because the mean of its divisors is an integer number (31558656).

Almost surely, 2^242664869 is an apocalyptic number.

It is an amenable number.

242664869 is a deficient number, since it is larger than the sum of its proper divisors (9804379).

242664869 is a wasteful number, since it uses less digits than its factorization.

242664869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61795.

The product of its digits is 995328, while the sum is 47.

The square root of 242664869 is about 15577.7042275170. The cubic root of 242664869 is about 623.7381422720.

The spelling of 242664869 in words is "two hundred forty-two million, six hundred sixty-four thousand, eight hundred sixty-nine".