4068121 has 4 divisors (see below), whose sum is σ = 4144932. Its totient is φ = 3991312.

The previous prime is 4068107. The next prime is 4068131. The reversal of 4068121 is 1218604.

4068121 = 141² + 142² + ... + 246².

4068121 is digitally balanced in base 2, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 3370896 + 697225 = 1836^2 + 835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4068121 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4068092 and 4068101.

It is not an unprimeable number, because it can be changed into a prime (4068131) 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, 38326 + ... + 38431.

It is an arithmetic number, because the mean of its divisors is an integer number (1036233).

Almost surely, 2^4068121 is an apocalyptic number.

It is an amenable number.

4068121 is a deficient number, since it is larger than the sum of its proper divisors (76811).

4068121 is an equidigital number, since it uses as much as digits as its factorization.

4068121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76810.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 4068121 is about 2016.9583535611. The cubic root of 4068121 is about 159.6361654673.

The spelling of 4068121 in words is "four million, sixty-eight thousand, one hundred twenty-one".