7045121 has 4 divisors (see below), whose sum is σ = 7051200. Its totient is φ = 7039044.

The previous prime is 7045111. The next prime is 7045127. The reversal of 7045121 is 1215407.

7045121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7045121 - 2¹⁸ = 6782977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7045093 and 7045102.

It is not an unprimeable number, because it can be changed into a prime (7045127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 701 + ... + 3818.

It is an arithmetic number, because the mean of its divisors is an integer number (1762800).

It is a Proth number, since it is equal to 215 ⋅ 2¹⁵ + 1 and 215 < 2¹⁵.

Almost surely, 2^7045121 is an apocalyptic number.

It is an amenable number.

7045121 is a deficient number, since it is larger than the sum of its proper divisors (6079).

7045121 is a wasteful number, since it uses less digits than its factorization.

7045121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6078.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 7045121 is about 2654.2646816020. The cubic root of 7045121 is about 191.7032543469.

The spelling of 7045121 in words is "seven million, forty-five thousand, one hundred twenty-one".