42730049 has 2 divisors, whose sum is σ = 42730050. Its totient is φ = 42730048.

The previous prime is 42730019. The next prime is 42730063. The reversal of 42730049 is 94003724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40233649 + 2496400 = 6343^2 + 1580^2 .

It is a cyclic number.

It is not a de Polignac number, because 42730049 - 2⁸ = 42729793 is a prime.

It is not a weakly prime, because it can be changed into another prime (42730019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21365024 + 21365025.

It is an arithmetic number, because the mean of its divisors is an integer number (21365025).

Almost surely, 2^42730049 is an apocalyptic number.

It is an amenable number.

42730049 is a deficient number, since it is larger than the sum of its proper divisors (1).

42730049 is an equidigital number, since it uses as much as digits as its factorization.

42730049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 42730049 is about 6536.8225461611. The cubic root of 42730049 is about 349.6051301858.

The spelling of 42730049 in words is "forty-two million, seven hundred thirty thousand, forty-nine".