102740217 has 8 divisors (see below), whose sum is σ = 137092224. Its totient is φ = 68440848.

The previous prime is 102740191. The next prime is 102740221. The reversal of 102740217 is 712047201.

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

It is not a de Polignac number, because 102740217 - 2⁷ = 102740089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102740257) 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, 8353 + ... + 16590.

It is an arithmetic number, because the mean of its divisors is an integer number (17136528).

Almost surely, 2^102740217 is an apocalyptic number.

It is an amenable number.

102740217 is a deficient number, since it is larger than the sum of its proper divisors (34352007).

102740217 is a wasteful number, since it uses less digits than its factorization.

102740217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26319.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 102740217 is about 10136.0848950667. The cubic root of 102740217 is about 468.3603906416.

Adding to 102740217 its reverse (712047201), we get a palindrome (814787418).

The spelling of 102740217 in words is "one hundred two million, seven hundred forty thousand, two hundred seventeen".