102245 has 18 divisors (see below), whose sum is σ = 146034. Its totient is φ = 68640.

The previous prime is 102241. The next prime is 102251. The reversal of 102245 is 542201.

It can be written as a sum of positive squares in 3 ways, for example, as 484 + 101761 = 22^2 + 319^2 .

It is not a de Polignac number, because 102245 - 2² = 102241 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 (102241) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7859 + ... + 7871.

It is an arithmetic number, because the mean of its divisors is an integer number (8113).

2¹⁰²²⁴⁵ is an apocalyptic number.

It is an amenable number.

102245 is a deficient number, since it is larger than the sum of its proper divisors (43789).

102245 is a wasteful number, since it uses less digits than its factorization.

102245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53 (or 29 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 102245 is about 319.7577207825. The cubic root of 102245 is about 46.7606665396.

Multiplying 102245 by its product of nonzero digits (80), we get a square (8179600 = 2860²).

Adding to 102245 its reverse (542201), we get a palindrome (644446).

The spelling of 102245 in words is "one hundred two thousand, two hundred forty-five".