104520405 has 24 divisors (see below), whose sum is σ = 183820896. Its totient is φ = 50675680.

The previous prime is 104520347. The next prime is 104520413. The reversal of 104520405 is 504025401.

It is not a de Polignac number, because 104520405 - 2⁶ = 104520341 is a prime.

It is a super-2 number, since 2×104520405² = 21849030122728050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26979 + ... + 30608.

It is an arithmetic number, because the mean of its divisors is an integer number (7659204).

Almost surely, 2^104520405 is an apocalyptic number.

104520405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104520405 is a deficient number, since it is larger than the sum of its proper divisors (79300491).

104520405 is a wasteful number, since it uses less digits than its factorization.

104520405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57617 (or 57606 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 104520405 is about 10223.5221425886. The cubic root of 104520405 is about 471.0500215084.

Adding to 104520405 its reverse (504025401), we get a palindrome (608545806).

The spelling of 104520405 in words is "one hundred four million, five hundred twenty thousand, four hundred five".