42107647 has 2 divisors, whose sum is σ = 42107648. Its totient is φ = 42107646.

The previous prime is 42107609. The next prime is 42107671. The reversal of 42107647 is 74670124.

42107647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42107647 - 2⁷ = 42107519 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42107677) 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, 21053823 + 21053824.

It is an arithmetic number, because the mean of its divisors is an integer number (21053824).

Almost surely, 2^42107647 is an apocalyptic number.

42107647 is a deficient number, since it is larger than the sum of its proper divisors (1).

42107647 is an equidigital number, since it uses as much as digits as its factorization.

42107647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 42107647 is about 6489.0405300013. The cubic root of 42107647 is about 347.8993824362.

The spelling of 42107647 in words is "forty-two million, one hundred seven thousand, six hundred forty-seven".