102845 has 8 divisors (see below), whose sum is σ = 125664. Its totient is φ = 80784.

The previous prime is 102841. The next prime is 102859. The reversal of 102845 is 548201.

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 102845 - 2² = 102841 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102841) 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, 182 + ... + 488.

It is an arithmetic number, because the mean of its divisors is an integer number (15708).

2¹⁰²⁸⁴⁵ is an apocalyptic number.

It is an amenable number.

102845 is a deficient number, since it is larger than the sum of its proper divisors (22819).

102845 is an equidigital number, since it uses as much as digits as its factorization.

102845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 102845 is about 320.6945587315. The cubic root of 102845 is about 46.8519560808.

The spelling of 102845 in words is "one hundred two thousand, eight hundred forty-five".