100245 has 16 divisors (see below), whose sum is σ = 165312. Its totient is φ = 51840.

The previous prime is 100237. The next prime is 100267. The reversal of 100245 is 542001.

It is not a de Polignac number, because 100245 - 2³ = 100237 is a prime.

100245 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 100245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 534 + ... + 696.

It is an arithmetic number, because the mean of its divisors is an integer number (10332).

2¹⁰⁰²⁴⁵ is an apocalyptic number.

100245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100245 is a deficient number, since it is larger than the sum of its proper divisors (65067).

100245 is a wasteful number, since it uses less digits than its factorization.

100245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 100245 is about 316.6149080508. The cubic root of 100245 is about 46.4537637302.

Adding to 100245 its reverse (542001), we get a palindrome (642246).

The spelling of 100245 in words is "one hundred thousand, two hundred forty-five".