41857729 has 2 divisors, whose sum is σ = 41857730. Its totient is φ = 41857728.

The previous prime is 41857709. The next prime is 41857763. The reversal of 41857729 is 92775814.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41796225 + 61504 = 6465^2 + 248^2 .

It is a cyclic number.

It is not a de Polignac number, because 41857729 - 2¹⁹ = 41333441 is a prime.

It is not a weakly prime, because it can be changed into another prime (41857709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20928864 + 20928865.

It is an arithmetic number, because the mean of its divisors is an integer number (20928865).

Almost surely, 2^41857729 is an apocalyptic number.

It is an amenable number.

41857729 is a deficient number, since it is larger than the sum of its proper divisors (1).

41857729 is an equidigital number, since it uses as much as digits as its factorization.

41857729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 43.

The square root of 41857729 is about 6469.7549412632. The cubic root of 41857729 is about 347.2097301713.

The spelling of 41857729 in words is "forty-one million, eight hundred fifty-seven thousand, seven hundred twenty-nine".