104286721 has 16 divisors (see below), whose sum is σ = 137669760. Its totient is φ = 76481280.

The previous prime is 104286719. The next prime is 104286733. The reversal of 104286721 is 127682401.

It is a cyclic number.

It is not a de Polignac number, because 104286721 - 2¹ = 104286719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104286781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38526 + ... + 41143.

It is an arithmetic number, because the mean of its divisors is an integer number (8604360).

Almost surely, 2^104286721 is an apocalyptic number.

104286721 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

104286721 is a deficient number, since it is larger than the sum of its proper divisors (33383039).

104286721 is a wasteful number, since it uses less digits than its factorization.

104286721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79704.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 104286721 is about 10212.0870051131. The cubic root of 104286721 is about 470.6987057663.

The spelling of 104286721 in words is "one hundred four million, two hundred eighty-six thousand, seven hundred twenty-one".