242399305 has 4 divisors (see below), whose sum is σ = 290879172. Its totient is φ = 193919440.

The previous prime is 242399303. The next prime is 242399327. The reversal of 242399305 is 503993242.

242399305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 142659136 + 99740169 = 11944^2 + 9987^2 .

It is not a de Polignac number, because 242399305 - 2¹ = 242399303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242399303) 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, 24239926 + ... + 24239935.

It is an arithmetic number, because the mean of its divisors is an integer number (72719793).

Almost surely, 2^242399305 is an apocalyptic number.

It is an amenable number.

242399305 is a deficient number, since it is larger than the sum of its proper divisors (48479867).

242399305 is an equidigital number, since it uses as much as digits as its factorization.

242399305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48479866.

The product of its (nonzero) digits is 58320, while the sum is 37.

The square root of 242399305 is about 15569.1780450992. The cubic root of 242399305 is about 623.5105267710.

The spelling of 242399305 in words is "two hundred forty-two million, three hundred ninety-nine thousand, three hundred five".