242322421 has 4 divisors (see below), whose sum is σ = 264351744. Its totient is φ = 220293100.

The previous prime is 242322419. The next prime is 242322461. The reversal of 242322421 is 124223242.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 242322421 - 2¹ = 242322419 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242322392 and 242322401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242322461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11014645 + ... + 11014666.

It is an arithmetic number, because the mean of its divisors is an integer number (66087936).

Almost surely, 2^242322421 is an apocalyptic number.

It is an amenable number.

242322421 is a deficient number, since it is larger than the sum of its proper divisors (22029323).

242322421 is a wasteful number, since it uses less digits than its factorization.

242322421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22029322.

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

The square root of 242322421 is about 15566.7087401287. The cubic root of 242322421 is about 623.4445982919. Note that the first 3 decimals are identical.

Adding to 242322421 its reverse (124223242), we get a palindrome (366545663).

The spelling of 242322421 in words is "two hundred forty-two million, three hundred twenty-two thousand, four hundred twenty-one".