104097721 has 16 divisors (see below), whose sum is σ = 132256768. Its totient is φ = 79704000.

The previous prime is 104097703. The next prime is 104097727. The reversal of 104097721 is 127790401.

It is a cyclic number.

It is not a de Polignac number, because 104097721 - 2⁵ = 104097689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (104097727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15630 + ... + 21271.

It is an arithmetic number, because the mean of its divisors is an integer number (8266048).

Almost surely, 2^104097721 is an apocalyptic number.

It is an amenable number.

104097721 is a deficient number, since it is larger than the sum of its proper divisors (28159047).

104097721 is a wasteful number, since it uses less digits than its factorization.

104097721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36952.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 104097721 is about 10202.8290684496. The cubic root of 104097721 is about 470.4141829590.

The spelling of 104097721 in words is "one hundred four million, ninety-seven thousand, seven hundred twenty-one".