242043305 has 16 divisors (see below), whose sum is σ = 335172864. Its totient is φ = 164358720.

The previous prime is 242043293. The next prime is 242043313. The reversal of 242043305 is 503340242.

It is not a de Polignac number, because 242043305 - 2¹⁸ = 241781161 is a prime.

It is a super-2 number, since 2×242043305² = 117169922990646050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29966 + ... + 37175.

It is an arithmetic number, because the mean of its divisors is an integer number (20948304).

Almost surely, 2^242043305 is an apocalyptic number.

It is an amenable number.

242043305 is a deficient number, since it is larger than the sum of its proper divisors (93129559).

242043305 is a wasteful number, since it uses less digits than its factorization.

242043305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67256.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 242043305 is about 15557.7409992582. The cubic root of 242043305 is about 623.2051374168.

Adding to 242043305 its reverse (503340242), we get a palindrome (745383547).

The spelling of 242043305 in words is "two hundred forty-two million, forty-three thousand, three hundred five".