102440243 has 8 divisors (see below), whose sum is σ = 104611728. Its totient is φ = 100289664.

The previous prime is 102440237. The next prime is 102440257. The reversal of 102440243 is 342044201.

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

It is a cyclic number.

It is not a de Polignac number, because 102440243 - 2⁴ = 102440227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102440293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4880 + ... + 15122.

It is an arithmetic number, because the mean of its divisors is an integer number (13076466).

Almost surely, 2^102440243 is an apocalyptic number.

102440243 is a deficient number, since it is larger than the sum of its proper divisors (2171485).

102440243 is a wasteful number, since it uses less digits than its factorization.

102440243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10453.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 102440243 is about 10121.2767475255. The cubic root of 102440243 is about 467.9041171944.

Adding to 102440243 its reverse (342044201), we get a palindrome (444484444).

The spelling of 102440243 in words is "one hundred two million, four hundred forty thousand, two hundred forty-three".