7347121 has 4 divisors (see below), whose sum is σ = 7600500. Its totient is φ = 7093744.

The previous prime is 7347113. The next prime is 7347133. The reversal of 7347121 is 1217437.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4494400 + 2852721 = 2120^2 + 1689^2 .

It is a cyclic number.

It is not a de Polignac number, because 7347121 - 2³ = 7347113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7347161) 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 3 ways as a sum of consecutive naturals, for example, 126646 + ... + 126703.

It is an arithmetic number, because the mean of its divisors is an integer number (1900125).

Almost surely, 2^7347121 is an apocalyptic number.

It is an amenable number.

7347121 is a deficient number, since it is larger than the sum of its proper divisors (253379).

7347121 is a wasteful number, since it uses less digits than its factorization.

7347121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253378.

The product of its digits is 1176, while the sum is 25.

The square root of 7347121 is about 2710.5573227659. The cubic root of 7347121 is about 194.4042391129.

The spelling of 7347121 in words is "seven million, three hundred forty-seven thousand, one hundred twenty-one".