42305047 has 2 divisors, whose sum is σ = 42305048. Its totient is φ = 42305046.

The previous prime is 42305041. The next prime is 42305059. The reversal of 42305047 is 74050324.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42305047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42305041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21152523 + 21152524.

It is an arithmetic number, because the mean of its divisors is an integer number (21152524).

Almost surely, 2^42305047 is an apocalyptic number.

42305047 is a deficient number, since it is larger than the sum of its proper divisors (1).

42305047 is an equidigital number, since it uses as much as digits as its factorization.

42305047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 42305047 is about 6504.2330062814. The cubic root of 42305047 is about 348.4421840831.

The spelling of 42305047 in words is "forty-two million, three hundred five thousand, forty-seven".