42730579 has 2 divisors, whose sum is σ = 42730580. Its totient is φ = 42730578.

The previous prime is 42730577. The next prime is 42730607. The reversal of 42730579 is 97503724.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42730579 - 2¹ = 42730577 is a prime.

Together with 42730577, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42730577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21365289 + 21365290.

It is an arithmetic number, because the mean of its divisors is an integer number (21365290).

Almost surely, 2^42730579 is an apocalyptic number.

42730579 is a deficient number, since it is larger than the sum of its proper divisors (1).

42730579 is an equidigital number, since it uses as much as digits as its factorization.

42730579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 37.

The square root of 42730579 is about 6536.8630856092. The cubic root of 42730579 is about 349.6065756164.

The spelling of 42730579 in words is "forty-two million, seven hundred thirty thousand, five hundred seventy-nine".