42826013 has 2 divisors, whose sum is σ = 42826014. Its totient is φ = 42826012.

The previous prime is 42825997. The next prime is 42826031. The reversal of 42826013 is 31062824.

Together with next prime (42826031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42680089 + 145924 = 6533^2 + 382^2 .

It is a cyclic number.

It is not a de Polignac number, because 42826013 - 2⁴ = 42825997 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42826073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21413006 + 21413007.

It is an arithmetic number, because the mean of its divisors is an integer number (21413007).

Almost surely, 2^42826013 is an apocalyptic number.

It is an amenable number.

42826013 is a deficient number, since it is larger than the sum of its proper divisors (1).

42826013 is an equidigital number, since it uses as much as digits as its factorization.

42826013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 42826013 is about 6544.1586930636. The cubic root of 42826013 is about 349.8666512419.

Adding to 42826013 its reverse (31062824), we get a palindrome (73888837).

The spelling of 42826013 in words is "forty-two million, eight hundred twenty-six thousand, thirteen".