242022321 has 6 divisors (see below), whose sum is σ = 349587810. Its totient is φ = 161348208.

The previous prime is 242022311. The next prime is 242022343. The reversal of 242022321 is 123220242.

242022321 is a `hidden beast` number, since 2 + 420 + 223 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 175191696 + 66830625 = 13236^2 + 8175^2 .

It is not a de Polignac number, because 242022321 - 2¹⁸ = 241760177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242022294 and 242022303.

It is not an unprimeable number, because it can be changed into a prime (242022311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13445676 + ... + 13445693.

It is an arithmetic number, because the mean of its divisors is an integer number (58264635).

Almost surely, 2^242022321 is an apocalyptic number.

It is an amenable number.

242022321 is a deficient number, since it is larger than the sum of its proper divisors (107565489).

242022321 is a wasteful number, since it uses less digits than its factorization.

242022321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26891375 (or 26891372 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 242022321 is about 15557.0665936738. The cubic root of 242022321 is about 623.1871272587.

Adding to 242022321 its reverse (123220242), we get a palindrome (365242563).

The spelling of 242022321 in words is "two hundred forty-two million, twenty-two thousand, three hundred twenty-one".