242247643 has 8 divisors (see below), whose sum is σ = 273383280. Its totient is φ = 212630880.

The previous prime is 242247641. The next prime is 242247667. The reversal of 242247643 is 346742242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 242247643 - 2¹ = 242247641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242247599 and 242247608.

It is not an unprimeable number, because it can be changed into a prime (242247641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379380 + ... + 380017.

It is an arithmetic number, because the mean of its divisors is an integer number (34172910).

Almost surely, 2^242247643 is an apocalyptic number.

242247643 is a deficient number, since it is larger than the sum of its proper divisors (31135637).

242247643 is a wasteful number, since it uses less digits than its factorization.

242247643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759437.

The product of its digits is 64512, while the sum is 34.

The square root of 242247643 is about 15564.3066983403. The cubic root of 242247643 is about 623.3804623413.

Adding to 242247643 its reverse (346742242), we get a palindrome (588989885).

The spelling of 242247643 in words is "two hundred forty-two million, two hundred forty-seven thousand, six hundred forty-three".