104121405 has 48 divisors (see below), whose sum is σ = 188398080. Its totient is φ = 53136000.

The previous prime is 104121373. The next prime is 104121419. The reversal of 104121405 is 504121401.

It is not a de Polignac number, because 104121405 - 2⁵ = 104121373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140526 + ... + 141264.

It is an arithmetic number, because the mean of its divisors is an integer number (3924960).

Almost surely, 2^104121405 is an apocalyptic number.

104121405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

104121405 is a deficient number, since it is larger than the sum of its proper divisors (84276675).

104121405 is a wasteful number, since it uses less digits than its factorization.

104121405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 104121405 is about 10203.9896609120. The cubic root of 104121405 is about 470.4498559932.

Adding to 104121405 its reverse (504121401), we get a palindrome (608242806).

The spelling of 104121405 in words is "one hundred four million, one hundred twenty-one thousand, four hundred five".