42730511 has 2 divisors, whose sum is σ = 42730512. Its totient is φ = 42730510.

The previous prime is 42730489. The next prime is 42730517. The reversal of 42730511 is 11503724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42730511 - 2¹⁸ = 42468367 is a prime.

It is a super-2 number, since 2×42730511² = 3651793140642242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42730517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21365255 + 21365256.

It is an arithmetic number, because the mean of its divisors is an integer number (21365256).

Almost surely, 2^42730511 is an apocalyptic number.

42730511 is a deficient number, since it is larger than the sum of its proper divisors (1).

42730511 is an equidigital number, since it uses as much as digits as its factorization.

42730511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 42730511 is about 6536.8578843356. The cubic root of 42730511 is about 349.6063901656.

The spelling of 42730511 in words is "forty-two million, seven hundred thirty thousand, five hundred eleven".