241005643 has 4 divisors (see below), whose sum is σ = 241036720. Its totient is φ = 240974568.

The previous prime is 241005637. The next prime is 241005659. The reversal of 241005643 is 346500142.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 241005643 - 2¹³ = 240997451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (241005043) 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, 6793 + ... + 22981.

It is an arithmetic number, because the mean of its divisors is an integer number (60259180).

Almost surely, 2^241005643 is an apocalyptic number.

241005643 is a deficient number, since it is larger than the sum of its proper divisors (31077).

241005643 is a wasteful number, since it uses less digits than its factorization.

241005643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31076.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 241005643 is about 15524.3564439883. The cubic root of 241005643 is about 622.3132823870.

Adding to 241005643 its reverse (346500142), we get a palindrome (587505785).

The spelling of 241005643 in words is "two hundred forty-one million, five thousand, six hundred forty-three".