102917105 has 4 divisors (see below), whose sum is σ = 123500532. Its totient is φ = 82333680.

The previous prime is 102917069. The next prime is 102917107. The reversal of 102917105 is 501719201.

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 59660176 + 43256929 = 7724^2 + 6577^2 .

It is a de Polignac number, because none of the positive numbers 2^k-102917105 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102917107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10291706 + ... + 10291715.

It is an arithmetic number, because the mean of its divisors is an integer number (30875133).

Almost surely, 2^102917105 is an apocalyptic number.

It is an amenable number.

102917105 is a deficient number, since it is larger than the sum of its proper divisors (20583427).

102917105 is an equidigital number, since it uses as much as digits as its factorization.

102917105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20583426.

The product of its (nonzero) digits is 630, while the sum is 26.

The square root of 102917105 is about 10144.8067995403. The cubic root of 102917105 is about 468.6290288131.

The spelling of 102917105 in words is "one hundred two million, nine hundred seventeen thousand, one hundred five".