104443021 has 4 divisors (see below), whose sum is σ = 105419232. Its totient is φ = 103466812.

The previous prime is 104442991. The next prime is 104443043. The reversal of 104443021 is 120344401.

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: 120344401 = 43 ⋅2798707.

It is a cyclic number.

It is not a de Polignac number, because 104443021 - 2¹⁵ = 104410253 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 104443021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104443051) 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, 487945 + ... + 488158.

It is an arithmetic number, because the mean of its divisors is an integer number (26354808).

Almost surely, 2^104443021 is an apocalyptic number.

It is an amenable number.

104443021 is a deficient number, since it is larger than the sum of its proper divisors (976211).

104443021 is an equidigital number, since it uses as much as digits as its factorization.

104443021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976210.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 104443021 is about 10219.7368361421. The cubic root of 104443021 is about 470.9337420300.

Adding to 104443021 its reverse (120344401), we get a palindrome (224787422).

The spelling of 104443021 in words is "one hundred four million, four hundred forty-three thousand, twenty-one".