42507613 has 2 divisors, whose sum is σ = 42507614. Its totient is φ = 42507612.

The previous prime is 42507601. The next prime is 42507637. The reversal of 42507613 is 31670524.

42507613 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., 26491609 + 16016004 = 5147^2 + 4002^2 .

It is a cyclic number.

It is not a de Polignac number, because 42507613 - 2²⁵ = 8953181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42507683) 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, 21253806 + 21253807.

It is an arithmetic number, because the mean of its divisors is an integer number (21253807).

Almost surely, 2^42507613 is an apocalyptic number.

It is an amenable number.

42507613 is a deficient number, since it is larger than the sum of its proper divisors (1).

42507613 is an equidigital number, since it uses as much as digits as its factorization.

42507613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 42507613 is about 6519.7862695030. The cubic root of 42507613 is about 348.9974384259.

The spelling of 42507613 in words is "forty-two million, five hundred seven thousand, six hundred thirteen".