42679613 has 2 divisors, whose sum is σ = 42679614. Its totient is φ = 42679612.

The previous prime is 42679601. The next prime is 42679621. The reversal of 42679613 is 31697624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38464804 + 4214809 = 6202^2 + 2053^2 .

It is a cyclic number.

It is not a de Polignac number, because 42679613 - 2¹² = 42675517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42679313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21339806 + 21339807.

It is an arithmetic number, because the mean of its divisors is an integer number (21339807).

Almost surely, 2^42679613 is an apocalyptic number.

It is an amenable number.

42679613 is a deficient number, since it is larger than the sum of its proper divisors (1).

42679613 is an equidigital number, since it uses as much as digits as its factorization.

42679613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 38.

The square root of 42679613 is about 6532.9635694683. The cubic root of 42679613 is about 349.4675250201.

The spelling of 42679613 in words is "forty-two million, six hundred seventy-nine thousand, six hundred thirteen".