41442509 has 2 divisors, whose sum is σ = 41442510. Its totient is φ = 41442508.

The previous prime is 41442493. The next prime is 41442521. The reversal of 41442509 is 90524414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31393609 + 10048900 = 5603^2 + 3170^2 .

It is a cyclic number.

It is not a de Polignac number, because 41442509 - 2⁴ = 41442493 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41442529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20721254 + 20721255.

It is an arithmetic number, because the mean of its divisors is an integer number (20721255).

Almost surely, 2^41442509 is an apocalyptic number.

It is an amenable number.

41442509 is a deficient number, since it is larger than the sum of its proper divisors (1).

41442509 is an equidigital number, since it uses as much as digits as its factorization.

41442509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 41442509 is about 6437.5856499157. The cubic root of 41442509 is about 346.0578299988.

The spelling of 41442509 in words is "forty-one million, four hundred forty-two thousand, five hundred nine".