242112321 has 48 divisors (see below), whose sum is σ = 403341120. Its totient is φ = 143881920.

The previous prime is 242112313. The next prime is 242112359. The reversal of 242112321 is 123211242.

It is a happy number.

It is not a de Polignac number, because 242112321 - 2³ = 242112313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 242112294 and 242112303.

It is not an unprimeable number, because it can be changed into a prime (242112361) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140815 + ... + 142523.

It is an arithmetic number, because the mean of its divisors is an integer number (8402940).

Almost surely, 2^242112321 is an apocalyptic number.

It is an amenable number.

242112321 is a deficient number, since it is larger than the sum of its proper divisors (161228799).

242112321 is a wasteful number, since it uses less digits than its factorization.

242112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788 (or 1776 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 242112321 is about 15559.9589009740. The cubic root of 242112321 is about 623.2643651630.

Adding to 242112321 its reverse (123211242), we get a palindrome (365323563).

The spelling of 242112321 in words is "two hundred forty-two million, one hundred twelve thousand, three hundred twenty-one".