42730811 has 4 divisors (see below), whose sum is σ = 42760392. Its totient is φ = 42701232.

The previous prime is 42730799. The next prime is 42730823. The reversal of 42730811 is 11803724.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42730799) and next prime (42730823).

It is a cyclic number.

It is not a de Polignac number, because 42730811 - 2⁶ = 42730747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42730511) 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 in 3 ways as a sum of consecutive naturals, for example, 12506 + ... + 15551.

It is an arithmetic number, because the mean of its divisors is an integer number (10690098).

Almost surely, 2^42730811 is an apocalyptic number.

42730811 is a deficient number, since it is larger than the sum of its proper divisors (29581).

42730811 is a wasteful number, since it uses less digits than its factorization.

42730811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29580.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 42730811 is about 6536.8808310998. The cubic root of 42730811 is about 349.6072083294.

The spelling of 42730811 in words is "forty-two million, seven hundred thirty thousand, eight hundred eleven".