242657205 has 16 divisors (see below), whose sum is σ = 443716224. Its totient is φ = 110928960.

The previous prime is 242657203. The next prime is 242657209. The reversal of 242657205 is 502756242.

It is not a de Polignac number, because 242657205 - 2¹ = 242657203 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242657203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1155406 + ... + 1155615.

It is an arithmetic number, because the mean of its divisors is an integer number (27732264).

Almost surely, 2^242657205 is an apocalyptic number.

It is an amenable number.

242657205 is a deficient number, since it is larger than the sum of its proper divisors (201059019).

242657205 is a wasteful number, since it uses less digits than its factorization.

242657205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311036.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 242657205 is about 15577.4582329724. The cubic root of 242657205 is about 623.7315757681.

The spelling of 242657205 in words is "two hundred forty-two million, six hundred fifty-seven thousand, two hundred five".