242403321 has 4 divisors (see below), whose sum is σ = 323204432. Its totient is φ = 161602212.

The previous prime is 242403283. The next prime is 242403361. The reversal of 242403321 is 123304242.

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 not a de Polignac number, because 242403321 - 2¹⁰ = 242402297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242403361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40400551 + ... + 40400556.

It is an arithmetic number, because the mean of its divisors is an integer number (80801108).

Almost surely, 2^242403321 is an apocalyptic number.

It is an amenable number.

242403321 is a deficient number, since it is larger than the sum of its proper divisors (80801111).

242403321 is an equidigital number, since it uses as much as digits as its factorization.

242403321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80801110.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 242403321 is about 15569.3070173338. The cubic root of 242403321 is about 623.5139701313.

Adding to 242403321 its reverse (123304242), we get a palindrome (365707563).

The spelling of 242403321 in words is "two hundred forty-two million, four hundred three thousand, three hundred twenty-one".