102117539 has 8 divisors (see below), whose sum is σ = 107032320. Its totient is φ = 97242376.

The previous prime is 102117529. The next prime is 102117553. The reversal of 102117539 is 935711201.

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 102117539 - 2¹² = 102113443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102117529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4559 + ... + 15000.

It is an arithmetic number, because the mean of its divisors is an integer number (13379040).

Almost surely, 2^102117539 is an apocalyptic number.

102117539 is a deficient number, since it is larger than the sum of its proper divisors (4914781).

102117539 is a wasteful number, since it uses less digits than its factorization.

102117539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19809.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 102117539 is about 10105.3223105451. The cubic root of 102117539 is about 467.4122748071.

The spelling of 102117539 in words is "one hundred two million, one hundred seventeen thousand, five hundred thirty-nine".