4241021 has 2 divisors, whose sum is σ = 4241022. Its totient is φ = 4241020.

The previous prime is 4240991. The next prime is 4241023. The reversal of 4241021 is 1201424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2524921 + 1716100 = 1589^2 + 1310^2 .

It is a cyclic number.

It is not a de Polignac number, because 4241021 - 2¹⁰ = 4239997 is a prime.

Together with 4241023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 4240987 and 4241005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4241023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2120510 + 2120511.

It is an arithmetic number, because the mean of its divisors is an integer number (2120511).

Almost surely, 2^4241021 is an apocalyptic number.

It is an amenable number.

4241021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4241021 is an equidigital number, since it uses as much as digits as its factorization.

4241021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 4241021 is about 2059.3739339906. The cubic root of 4241021 is about 161.8664371871.

Adding to 4241021 its reverse (1201424), we get a palindrome (5442445).

The spelling of 4241021 in words is "four million, two hundred forty-one thousand, twenty-one".