42806041 has 2 divisors, whose sum is σ = 42806042. Its totient is φ = 42806040.

The previous prime is 42805999. The next prime is 42806047. The reversal of 42806041 is 14060824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36252441 + 6553600 = 6021^2 + 2560^2 .

It is a cyclic number.

It is not a de Polignac number, because 42806041 - 2¹³ = 42797849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42805997 and 42806015.

It is not a weakly prime, because it can be changed into another prime (42806047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21403020 + 21403021.

It is an arithmetic number, because the mean of its divisors is an integer number (21403021).

Almost surely, 2^42806041 is an apocalyptic number.

It is an amenable number.

42806041 is a deficient number, since it is larger than the sum of its proper divisors (1).

42806041 is an equidigital number, since it uses as much as digits as its factorization.

42806041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 42806041 is about 6542.6325741249. The cubic root of 42806041 is about 349.8122557723.

Adding to 42806041 its reverse (14060824), we get a palindrome (56866865).

The spelling of 42806041 in words is "forty-two million, eight hundred six thousand, forty-one".