804650121 has 18 divisors (see below), whose sum is σ = 1277540810. Its totient is φ = 487666080.

The previous prime is 804650107. The next prime is 804650173. The reversal of 804650121 is 121056408.

804650121 is a `hidden beast` number, since 8 + 0 + 4 + 650 + 1 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 637310025 + 167340096 = 25245^2 + 12936^2 .

It is not a de Polignac number, because 804650121 - 2⁵ = 804650089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (804650321) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 368356 + ... + 370533.

Almost surely, 2^804650121 is an apocalyptic number.

It is an amenable number.

804650121 is a deficient number, since it is larger than the sum of its proper divisors (472890689).

804650121 is a wasteful number, since it uses less digits than its factorization.

804650121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738917 (or 738903 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 804650121 is about 28366.3554409092. The cubic root of 804650121 is about 930.1129554095.

The spelling of 804650121 in words is "eight hundred four million, six hundred fifty thousand, one hundred twenty-one".