806457121 has 4 divisors (see below), whose sum is σ = 817815744. Its totient is φ = 795098500.

The previous prime is 806457089. The next prime is 806457139. The reversal of 806457121 is 121754608.

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.

It is a cyclic number.

It is not a de Polignac number, because 806457121 - 2⁵ = 806457089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (806457721) 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, 5679205 + ... + 5679346.

It is an arithmetic number, because the mean of its divisors is an integer number (204453936).

Almost surely, 2^806457121 is an apocalyptic number.

It is an amenable number.

806457121 is a deficient number, since it is larger than the sum of its proper divisors (11358623).

806457121 is a wasteful number, since it uses less digits than its factorization.

806457121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11358622.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 806457121 is about 28398.1886922388. The cubic root of 806457121 is about 930.8086853545.

The spelling of 806457121 in words is "eight hundred six million, four hundred fifty-seven thousand, one hundred twenty-one".