242130321 has 12 divisors (see below), whose sum is σ = 349878672. Its totient is φ = 161357976.

The previous prime is 242130293. The next prime is 242130347. The reversal of 242130321 is 123031242.

It is not a de Polignac number, because 242130321 - 2¹⁰ = 242129297 is a prime.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 242130294 and 242130303.

It is not an unprimeable number, because it can be changed into a prime (242130121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43710 + ... + 48936.

It is an arithmetic number, because the mean of its divisors is an integer number (29156556).

Almost surely, 2^242130321 is an apocalyptic number.

It is an amenable number.

242130321 is a deficient number, since it is larger than the sum of its proper divisors (107748351).

242130321 is a wasteful number, since it uses less digits than its factorization.

242130321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10380 (or 10377 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 242130321 is about 15560.5372979213. The cubic root of 242130321 is about 623.2798104469.

Adding to 242130321 its reverse (123031242), we get a palindrome (365161563).

The spelling of 242130321 in words is "two hundred forty-two million, one hundred thirty thousand, three hundred twenty-one".