7104721 has 12 divisors (see below), whose sum is σ = 7832692. Its totient is φ = 6405984.

The previous prime is 7104719. The next prime is 7104737. The reversal of 7104721 is 1274017.

It can be written as a sum of positive squares in 2 ways, for example, as 1535121 + 5569600 = 1239^2 + 2360^2 .

It is not a de Polignac number, because 7104721 - 2¹ = 7104719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7104692 and 7104701.

It is not an unprimeable number, because it can be changed into a prime (7104751) 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 11 ways as a sum of consecutive naturals, for example, 45175 + ... + 45331.

Almost surely, 2^7104721 is an apocalyptic number.

It is an amenable number.

7104721 is a deficient number, since it is larger than the sum of its proper divisors (727971).

7104721 is a wasteful number, since it uses less digits than its factorization.

7104721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 229 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 22.

The square root of 7104721 is about 2665.4682515461. The cubic root of 7104721 is about 192.2423246017.

Adding to 7104721 its reverse (1274017), we get a palindrome (8378738).

The spelling of 7104721 in words is "seven million, one hundred four thousand, seven hundred twenty-one".