41442521 has 2 divisors, whose sum is σ = 41442522. Its totient is φ = 41442520.

The previous prime is 41442509. The next prime is 41442523. The reversal of 41442521 is 12524414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40513225 + 929296 = 6365^2 + 964^2 .

It is a cyclic number.

It is not a de Polignac number, because 41442521 - 2²² = 37248217 is a prime.

It is a Sophie Germain prime.

Together with 41442523, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (41442523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20721260 + 20721261.

It is an arithmetic number, because the mean of its divisors is an integer number (20721261).

Almost surely, 2^41442521 is an apocalyptic number.

It is an amenable number.

41442521 is a deficient number, since it is larger than the sum of its proper divisors (1).

41442521 is an equidigital number, since it uses as much as digits as its factorization.

41442521 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1280, while the sum is 23.

The square root of 41442521 is about 6437.5865819420. The cubic root of 41442521 is about 346.0578634001.

Adding to 41442521 its reverse (12524414), we get a palindrome (53966935).

The spelling of 41442521 in words is "forty-one million, four hundred forty-two thousand, five hundred twenty-one".