242430321 has 32 divisors (see below), whose sum is σ = 382123008. Its totient is φ = 133848000.

The previous prime is 242430311. The next prime is 242430341. The reversal of 242430321 is 123034242.

It is not a de Polignac number, because 242430321 - 2¹¹ = 242428273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (242430311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72946 + ... + 76196.

It is an arithmetic number, because the mean of its divisors is an integer number (11941344).

Almost surely, 2^242430321 is an apocalyptic number.

242430321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

242430321 is a deficient number, since it is larger than the sum of its proper divisors (139692687).

242430321 is a wasteful number, since it uses less digits than its factorization.

242430321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3381.

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

The square root of 242430321 is about 15570.1740838052. The cubic root of 242430321 is about 623.5371192259.

Adding to 242430321 its reverse (123034242), we get a palindrome (365464563).

The spelling of 242430321 in words is "two hundred forty-two million, four hundred thirty thousand, three hundred twenty-one".