104539 has 4 divisors (see below), whose sum is σ = 105624. Its totient is φ = 103456.

The previous prime is 104537. The next prime is 104543. The reversal of 104539 is 935401.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 935401 = 467 ⋅2003.

It is a cyclic number.

It is not a de Polignac number, because 104539 - 2¹ = 104537 is a prime.

It is a Duffinian number.

104539 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104537) 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, 382 + ... + 595.

It is an arithmetic number, because the mean of its divisors is an integer number (26406).

2¹⁰⁴⁵³⁹ is an apocalyptic number.

104539 is a deficient number, since it is larger than the sum of its proper divisors (1085).

104539 is an equidigital number, since it uses as much as digits as its factorization.

104539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 104539 is about 323.3249139797. The cubic root of 104539 is about 47.1077954350.

It can be divided in two parts, 1045 and 39, that multiplied together give a triangular number (40755 = T₂₈₅).

The spelling of 104539 in words is "one hundred four thousand, five hundred thirty-nine".