104095721 has 8 divisors (see below), whose sum is σ = 105131400. Its totient is φ = 103064832.

The previous prime is 104095681. The next prime is 104095729. The reversal of 104095721 is 127590401.

It can be written as a sum of positive squares in 4 ways, for example, as 1357225 + 102738496 = 1165^2 + 10136^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-104095721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104095729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54641 + ... + 56513.

It is an arithmetic number, because the mean of its divisors is an integer number (13141425).

Almost surely, 2^104095721 is an apocalyptic number.

It is an amenable number.

104095721 is a deficient number, since it is larger than the sum of its proper divisors (1035679).

104095721 is a wasteful number, since it uses less digits than its factorization.

104095721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2395.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 104095721 is about 10202.7310559477. The cubic root of 104095721 is about 470.4111702949.

The spelling of 104095721 in words is "one hundred four million, ninety-five thousand, seven hundred twenty-one".