4085323121 has 6 divisors (see below), whose sum is σ = 4490479266. Its totient is φ = 3713930000.

The previous prime is 4085323117. The next prime is 4085323147. The reversal of 4085323121 is 1213235804.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2933738896 + 1151584225 = 54164^2 + 33935^2 .

It is not a de Polignac number, because 4085323121 - 2² = 4085323117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4085323111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16881380 + ... + 16881621.

It is an arithmetic number, because the mean of its divisors is an integer number (748413211).

Almost surely, 2^4085323121 is an apocalyptic number.

It is an amenable number.

4085323121 is a deficient number, since it is larger than the sum of its proper divisors (405156145).

4085323121 is a wasteful number, since it uses less digits than its factorization.

4085323121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33763023 (or 33763012 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 4085323121 is about 63916.5324544441. The cubic root of 4085323121 is about 1598.6085716855.

Adding to 4085323121 its reverse (1213235804), we get a palindrome (5298558925).

The spelling of 4085323121 in words is "four billion, eighty-five million, three hundred twenty-three thousand, one hundred twenty-one".