104012100 has 90 divisors (see below), whose sum is σ = 337192394. Its totient is φ = 27734400.

The previous prime is 104012071. The next prime is 104012101. The reversal of 104012100 is 1210401.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 5645376 + 98366724 = 2376^2 + 9918^2 .

It is a tau number, because it is divible by the number of its divisors (90).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (104012101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1680 + ... + 14520.

Almost surely, 2^104012100 is an apocalyptic number.

104012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 104012100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168596197).

104012100 is an abundant number, since it is smaller than the sum of its proper divisors (233180294).

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

104012100 is a wasteful number, since it uses less digits than its factorization.

104012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12867 (or 12851 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 104012100 is about 10198.6322612397. The cubic root of 104012100 is about 470.2851747534.

Adding to 104012100 its reverse (1210401), we get a palindrome (105222501).

The spelling of 104012100 in words is "one hundred four million, twelve thousand, one hundred".