240102643 has 4 divisors (see below), whose sum is σ = 261930168. Its totient is φ = 218275120.

The previous prime is 240102641. The next prime is 240102647. The reversal of 240102643 is 346201042.

It is a happy number.

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 240102643 - 2¹ = 240102641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240102641) 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, 10913746 + ... + 10913767.

It is an arithmetic number, because the mean of its divisors is an integer number (65482542).

Almost surely, 2^240102643 is an apocalyptic number.

240102643 is a deficient number, since it is larger than the sum of its proper divisors (21827525).

240102643 is a wasteful number, since it uses less digits than its factorization.

240102643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21827524.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 240102643 is about 15495.2458192828. The cubic root of 240102643 is about 621.5350818045.

Adding to 240102643 its reverse (346201042), we get a palindrome (586303685).

The spelling of 240102643 in words is "two hundred forty million, one hundred two thousand, six hundred forty-three".