242217207 has 24 divisors (see below), whose sum is σ = 380470896. Its totient is φ = 147868416.

The previous prime is 242217191. The next prime is 242217221. The reversal of 242217207 is 702712242.

242217207 is a `hidden beast` number, since 242 + 217 + 207 = 666.

It is not a de Polignac number, because 242217207 - 2⁴ = 242217191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242217307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15733 + ... + 27054.

It is an arithmetic number, because the mean of its divisors is an integer number (15852954).

Almost surely, 2^242217207 is an apocalyptic number.

242217207 is a deficient number, since it is larger than the sum of its proper divisors (138253689).

242217207 is a wasteful number, since it uses less digits than its factorization.

242217207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42847 (or 42844 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 242217207 is about 15563.3289176834. The cubic root of 242217207 is about 623.3543540688.

Adding to 242217207 its reverse (702712242), we get a palindrome (944929449).

The spelling of 242217207 in words is "two hundred forty-two million, two hundred seventeen thousand, two hundred seven".