4121641 has 2 divisors, whose sum is σ = 4121642. Its totient is φ = 4121640.

The previous prime is 4121629. The next prime is 4121647. The reversal of 4121641 is 1461214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4016016 + 105625 = 2004^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 4121641 - 2⁵ = 4121609 is a prime.

It is a Chen prime.

4121641 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4121647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060820 + 2060821.

It is an arithmetic number, because the mean of its divisors is an integer number (2060821).

Almost surely, 2^4121641 is an apocalyptic number.

It is an amenable number.

4121641 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121641 is an equidigital number, since it uses as much as digits as its factorization.

4121641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 4121641 is about 2030.1825041114. The cubic root of 4121641 is about 160.3331729297. Note that the first 3 decimals are identical.

Adding to 4121641 its reverse (1461214), we get a palindrome (5582855).

The spelling of 4121641 in words is "four million, one hundred twenty-one thousand, six hundred forty-one".