42679589 has 2 divisors, whose sum is σ = 42679590. Its totient is φ = 42679588.

The previous prime is 42679583. The next prime is 42679601. The reversal of 42679589 is 98597624.

It is a happy number.

42679589 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., 22877089 + 19802500 = 4783^2 + 4450^2 .

It is a cyclic number.

It is not a de Polignac number, because 42679589 - 2⁴ = 42679573 is a prime.

It is a Sophie Germain 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 (42679583) 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, 21339794 + 21339795.

It is an arithmetic number, because the mean of its divisors is an integer number (21339795).

Almost surely, 2^42679589 is an apocalyptic number.

It is an amenable number.

42679589 is a deficient number, since it is larger than the sum of its proper divisors (1).

42679589 is an equidigital number, since it uses as much as digits as its factorization.

42679589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 42679589 is about 6532.9617326294. The cubic root of 42679589 is about 349.4674595148.

The spelling of 42679589 in words is "forty-two million, six hundred seventy-nine thousand, five hundred eighty-nine".