242234221 has 16 divisors (see below), whose sum is σ = 252563184. Its totient is φ = 232187904.

The previous prime is 242234171. The next prime is 242234263. The reversal of 242234221 is 122432242.

It can be written as a sum of positive squares in 8 ways, for example, as 36168196 + 206066025 = 6014^2 + 14355^2 .

It is a cyclic number.

It is not a de Polignac number, because 242234221 - 2¹¹ = 242232173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242234192 and 242234201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242234281) 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, 529825 + ... + 530281.

It is an arithmetic number, because the mean of its divisors is an integer number (15785199).

Almost surely, 2^242234221 is an apocalyptic number.

It is an amenable number.

242234221 is a deficient number, since it is larger than the sum of its proper divisors (10328963).

242234221 is a wasteful number, since it uses less digits than its factorization.

242234221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

The product of its digits is 1536, while the sum is 22.

The square root of 242234221 is about 15563.8755135088. The cubic root of 242234221 is about 623.3689490995.

Adding to 242234221 its reverse (122432242), we get a palindrome (364666463).

The spelling of 242234221 in words is "two hundred forty-two million, two hundred thirty-four thousand, two hundred twenty-one".