104246821 has 4 divisors (see below), whose sum is σ = 119139232. Its totient is φ = 89354412.

The previous prime is 104246809. The next prime is 104246843. The reversal of 104246821 is 128642401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 128642401 = 277 ⋅464413.

It is not a de Polignac number, because 104246821 - 2⁵ = 104246789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104246821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104246861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7446195 + ... + 7446208.

It is an arithmetic number, because the mean of its divisors is an integer number (29784808).

Almost surely, 2^104246821 is an apocalyptic number.

It is an amenable number.

104246821 is a deficient number, since it is larger than the sum of its proper divisors (14892411).

104246821 is an equidigital number, since it uses as much as digits as its factorization.

104246821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14892410.

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 104246821 is about 10210.1332508445. The cubic root of 104246821 is about 470.6386684836.

The spelling of 104246821 in words is "one hundred four million, two hundred forty-six thousand, eight hundred twenty-one".