104702921 has 4 divisors (see below), whose sum is σ = 104807700. Its totient is φ = 104598144.

The previous prime is 104702909. The next prime is 104702959. The reversal of 104702921 is 129207401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 129207401 = 109 ⋅1185389.

It can be written as a sum of positive squares in 2 ways, for example, as 70644025 + 34058896 = 8405^2 + 5836^2 .

It is a cyclic number.

It is not a de Polignac number, because 104702921 - 2²⁶ = 37594057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104702321) 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, 50876 + ... + 52893.

It is an arithmetic number, because the mean of its divisors is an integer number (26201925).

Almost surely, 2^104702921 is an apocalyptic number.

It is an amenable number.

104702921 is a deficient number, since it is larger than the sum of its proper divisors (104779).

104702921 is a wasteful number, since it uses less digits than its factorization.

104702921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104778.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 104702921 is about 10232.4445270913. Note that the first 3 decimals coincide. The cubic root of 104702921 is about 471.3240482908.

The spelling of 104702921 in words is "one hundred four million, seven hundred two thousand, nine hundred twenty-one".