4061021 has 2 divisors, whose sum is σ = 4061022. Its totient is φ = 4061020.

The previous prime is 4061017. The next prime is 4061023. The reversal of 4061021 is 1201604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4044121 + 16900 = 2011^2 + 130^2 .

It is a cyclic number.

It is not a de Polignac number, because 4061021 - 2² = 4061017 is a prime.

It is a Sophie Germain prime.

Together with 4061023, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4060987 and 4061005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4061023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2030510 + 2030511.

It is an arithmetic number, because the mean of its divisors is an integer number (2030511).

Almost surely, 2^4061021 is an apocalyptic number.

It is an amenable number.

4061021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4061021 is an equidigital number, since it uses as much as digits as its factorization.

4061021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 4061021 is about 2015.1975089306. The cubic root of 4061021 is about 159.5432415851.

Adding to 4061021 its reverse (1201604), we get a palindrome (5262625).

The spelling of 4061021 in words is "four million, sixty-one thousand, twenty-one".