42730063 has 2 divisors, whose sum is σ = 42730064. Its totient is φ = 42730062.

The previous prime is 42730049. The next prime is 42730081. The reversal of 42730063 is 36003724.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42730063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42730013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21365031 + 21365032.

It is an arithmetic number, because the mean of its divisors is an integer number (21365032).

Almost surely, 2^42730063 is an apocalyptic number.

42730063 is a deficient number, since it is larger than the sum of its proper divisors (1).

42730063 is an equidigital number, since it uses as much as digits as its factorization.

42730063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 42730063 is about 6536.8236170177. The cubic root of 42730063 is about 349.6051683672.

Adding to 42730063 its reverse (36003724), we get a palindrome (78733787).

The spelling of 42730063 in words is "forty-two million, seven hundred thirty thousand, sixty-three".