8442641 has 2 divisors, whose sum is σ = 8442642. Its totient is φ = 8442640.

The previous prime is 8442607. The next prime is 8442647. The reversal of 8442641 is 1462448.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4752400 + 3690241 = 2180^2 + 1921^2 .

It is a cyclic number.

It is not a de Polignac number, because 8442641 - 2¹⁰ = 8441617 is a prime.

It is a super-3 number, since 3×8442641³ (a number of 22 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8442647) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4221320 + 4221321.

It is an arithmetic number, because the mean of its divisors is an integer number (4221321).

Almost surely, 2^8442641 is an apocalyptic number.

It is an amenable number.

8442641 is a deficient number, since it is larger than the sum of its proper divisors (1).

8442641 is an equidigital number, since it uses as much as digits as its factorization.

8442641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 29.

The square root of 8442641 is about 2905.6223085597. The cubic root of 8442641 is about 203.6226604674.

The spelling of 8442641 in words is "eight million, four hundred forty-two thousand, six hundred forty-one".