242221065 has 16 divisors (see below), whose sum is σ = 391910400. Its totient is φ = 127732352.

The previous prime is 242221061. The next prime is 242221099. The reversal of 242221065 is 560122242.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 242221065 - 2² = 242221061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (242221061) 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, 89385 + ... + 92054.

It is an arithmetic number, because the mean of its divisors is an integer number (24494400).

Almost surely, 2^242221065 is an apocalyptic number.

It is an amenable number.

242221065 is a deficient number, since it is larger than the sum of its proper divisors (149689335).

242221065 is a wasteful number, since it uses less digits than its factorization.

242221065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181536.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 242221065 is about 15563.4528623953. The cubic root of 242221065 is about 623.3576636167.

The spelling of 242221065 in words is "two hundred forty-two million, two hundred twenty-one thousand, sixty-five".