42806441 has 2 divisors, whose sum is σ = 42806442. Its totient is φ = 42806440.

The previous prime is 42806417. The next prime is 42806453. The reversal of 42806441 is 14460824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37027225 + 5779216 = 6085^2 + 2404^2 .

It is a cyclic number.

It is not a de Polignac number, because 42806441 - 2⁶ = 42806377 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42806471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21403220 + 21403221.

It is an arithmetic number, because the mean of its divisors is an integer number (21403221).

Almost surely, 2^42806441 is an apocalyptic number.

It is an amenable number.

42806441 is a deficient number, since it is larger than the sum of its proper divisors (1).

42806441 is an equidigital number, since it uses as much as digits as its factorization.

42806441 is an evil number, because the sum of its binary digits is even.

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

The square root of 42806441 is about 6542.6631427883. The cubic root of 42806441 is about 349.8133453729.

The spelling of 42806441 in words is "forty-two million, eight hundred six thousand, four hundred forty-one".