864048121 has 2 divisors, whose sum is σ = 864048122. Its totient is φ = 864048120.

The previous prime is 864048109. The next prime is 864048139. The reversal of 864048121 is 121840468.

864048121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 718508025 + 145540096 = 26805^2 + 12064^2 .

It is a cyclic number.

It is not a de Polignac number, because 864048121 - 2⁷ = 864047993 is a prime.

It is not a weakly prime, because it can be changed into another prime (864048181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432024060 + 432024061.

It is an arithmetic number, because the mean of its divisors is an integer number (432024061).

Almost surely, 2^864048121 is an apocalyptic number.

It is an amenable number.

864048121 is a deficient number, since it is larger than the sum of its proper divisors (1).

864048121 is an equidigital number, since it uses as much as digits as its factorization.

864048121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 864048121 is about 29394.6954568337. The cubic root of 864048121 is about 952.4583131040.

Adding to 864048121 its reverse (121840468), we get a palindrome (985888589).

The spelling of 864048121 in words is "eight hundred sixty-four million, forty-eight thousand, one hundred twenty-one".