42875047 has 2 divisors, whose sum is σ = 42875048. Its totient is φ = 42875046.

The previous prime is 42875033. The next prime is 42875057. The reversal of 42875047 is 74057824.

42875047 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 a de Polignac number, because none of the positive numbers 2^k-42875047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42874997 and 42875015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42875057) 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, 21437523 + 21437524.

It is an arithmetic number, because the mean of its divisors is an integer number (21437524).

Almost surely, 2^42875047 is an apocalyptic number.

42875047 is a deficient number, since it is larger than the sum of its proper divisors (1).

42875047 is an equidigital number, since it uses as much as digits as its factorization.

42875047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 42875047 is about 6547.9040157901. The cubic root of 42875047 is about 350.0001278911. Note that the first 3 decimals are identical.

The spelling of 42875047 in words is "forty-two million, eight hundred seventy-five thousand, forty-seven".