242554643 has 4 divisors (see below), whose sum is σ = 243477168. Its totient is φ = 241632120.

The previous prime is 242554621. The next prime is 242554649. The reversal of 242554643 is 346455242.

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

It is a cyclic number.

It is not a de Polignac number, because 242554643 - 2¹⁴ = 242538259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242554649) 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, 460868 + ... + 461393.

It is an arithmetic number, because the mean of its divisors is an integer number (60869292).

Almost surely, 2^242554643 is an apocalyptic number.

242554643 is a deficient number, since it is larger than the sum of its proper divisors (922525).

242554643 is an equidigital number, since it uses as much as digits as its factorization.

242554643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922524.

The product of its digits is 115200, while the sum is 35.

The square root of 242554643 is about 15574.1658845667. The cubic root of 242554643 is about 623.6436874886.

The spelling of 242554643 in words is "two hundred forty-two million, five hundred fifty-four thousand, six hundred forty-three".