104012505 has 24 divisors (see below), whose sum is σ = 186967872. Its totient is φ = 55472688.

The previous prime is 104012501. The next prime is 104012507. The reversal of 104012505 is 505210401.

104012505 is a `hidden beast` number, since 10 + 401 + 250 + 5 = 666.

It is not a de Polignac number, because 104012505 - 2² = 104012501 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (104012501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41589 + ... + 44018.

It is an arithmetic number, because the mean of its divisors is an integer number (7790328).

Almost surely, 2^104012505 is an apocalyptic number.

104012505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104012505 is a deficient number, since it is larger than the sum of its proper divisors (82955367).

104012505 is an frugal number, since it uses more digits than its factorization.

104012505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85627 (or 85615 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 104012505 is about 10198.6521168241. The cubic root of 104012505 is about 470.2857851479.

Adding to 104012505 its reverse (505210401), we get a palindrome (609222906).

The spelling of 104012505 in words is "one hundred four million, twelve thousand, five hundred five".