104821056 has 42 divisors (see below), whose sum is σ = 300452282. Its totient is φ = 34940160.

The previous prime is 104821039. The next prime is 104821069. The reversal of 104821056 is 650128401.

It can be written as a sum of positive squares in only one way, i.e., 94478400 + 10342656 = 9720^2 + 3216^2 .

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 5 ways as a sum of consecutive naturals, for example, 90415 + ... + 91566.

Almost surely, 2^104821056 is an apocalyptic number.

104821056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

104821056 is an abundant number, since it is smaller than the sum of its proper divisors (195631226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

104821056 is a wasteful number, since it uses less digits than its factorization.

104821056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181999 (or 181986 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 104821056 is about 10238.2154695044. The cubic root of 104821056 is about 471.5012446800.

Adding to 104821056 its reverse (650128401), we get a palindrome (754949457).

The spelling of 104821056 in words is "one hundred four million, eight hundred twenty-one thousand, fifty-six".