102442717 has 4 divisors (see below), whose sum is σ = 110322940. Its totient is φ = 94562496.

The previous prime is 102442687. The next prime is 102442757. The reversal of 102442717 is 717244201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38266596 + 64176121 = 6186^2 + 8011^2 .

It is a cyclic number.

It is not a de Polignac number, because 102442717 - 2¹¹ = 102440669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102442757) 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, 3940092 + ... + 3940117.

It is an arithmetic number, because the mean of its divisors is an integer number (27580735).

Almost surely, 2^102442717 is an apocalyptic number.

It is an amenable number.

102442717 is a deficient number, since it is larger than the sum of its proper divisors (7880223).

102442717 is an equidigital number, since it uses as much as digits as its factorization.

102442717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880222.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 102442717 is about 10121.3989645701. The cubic root of 102442717 is about 467.9078838960.

Adding to 102442717 its reverse (717244201), we get a palindrome (819686918).

The spelling of 102442717 in words is "one hundred two million, four hundred forty-two thousand, seven hundred seventeen".