42826081 has 2 divisors, whose sum is σ = 42826082. Its totient is φ = 42826080.

The previous prime is 42826073. The next prime is 42826117. The reversal of 42826081 is 18062824.

42826081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 576081 = 6500^2 + 759^2 .

It is a cyclic number.

It is not a de Polignac number, because 42826081 - 2³ = 42826073 is a prime.

It is a super-2 number, since 2×42826081² = 3668146427637122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42826031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21413040 + 21413041.

It is an arithmetic number, because the mean of its divisors is an integer number (21413041).

Almost surely, 2^42826081 is an apocalyptic number.

It is an amenable number.

42826081 is a deficient number, since it is larger than the sum of its proper divisors (1).

42826081 is an equidigital number, since it uses as much as digits as its factorization.

42826081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 42826081 is about 6544.1638885346. The cubic root of 42826081 is about 349.8668364169.

The spelling of 42826081 in words is "forty-two million, eight hundred twenty-six thousand, eighty-one".