242740205 has 8 divisors (see below), whose sum is σ = 291472992. Its totient is φ = 194069008.

The previous prime is 242740193. The next prime is 242740207. The reversal of 242740205 is 502047242.

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 242740205 - 2⁴ = 242740189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242740207) 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, 6227 + ... + 22896.

It is an arithmetic number, because the mean of its divisors is an integer number (36434124).

Almost surely, 2^242740205 is an apocalyptic number.

It is an amenable number.

242740205 is a deficient number, since it is larger than the sum of its proper divisors (48732787).

242740205 is a wasteful number, since it uses less digits than its factorization.

242740205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30795.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 242740205 is about 15580.1221112031. The cubic root of 242740205 is about 623.8026826880.

Adding to 242740205 its reverse (502047242), we get a palindrome (744787447).

The spelling of 242740205 in words is "two hundred forty-two million, seven hundred forty thousand, two hundred five".