104123220 has 48 divisors (see below), whose sum is σ = 292326720. Its totient is φ = 27691776.

The previous prime is 104123219. The next prime is 104123233. The reversal of 104123220 is 22321401.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 104123220.

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 15 ways as a sum of consecutive naturals, for example, 22419 + ... + 26661.

It is an arithmetic number, because the mean of its divisors is an integer number (6090140).

Almost surely, 2^104123220 is an apocalyptic number.

104123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104123220 is an abundant number, since it is smaller than the sum of its proper divisors (188203500).

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

104123220 is a wasteful number, since it uses less digits than its factorization.

104123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4664 (or 4662 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 104123220 is about 10204.0785963261. The cubic root of 104123220 is about 470.4525895378.

Adding to 104123220 its reverse (22321401), we get a palindrome (126444621).

The spelling of 104123220 in words is "one hundred four million, one hundred twenty-three thousand, two hundred twenty".