104045 has 4 divisors (see below), whose sum is σ = 124860. Its totient is φ = 83232.

The previous prime is 104033. The next prime is 104047. The reversal of 104045 is 540401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 540401 = 179 ⋅3019.

It can be written as a sum of positive squares in 2 ways, for example, as 31684 + 72361 = 178^2 + 269^2 .

It is a cyclic number.

It is not a de Polignac number, because 104045 - 2⁶ = 103981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10400 + ... + 10409.

It is an arithmetic number, because the mean of its divisors is an integer number (31215).

2¹⁰⁴⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

104045 is a deficient number, since it is larger than the sum of its proper divisors (20815).

104045 is an equidigital number, since it uses as much as digits as its factorization.

104045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20814.

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

The square root of 104045 is about 322.5600719246. The cubic root of 104045 is about 47.0334754726.

Adding to 104045 its reverse (540401), we get a palindrome (644446).

The spelling of 104045 in words is "one hundred four thousand, forty-five".