42548911 has 2 divisors, whose sum is σ = 42548912. Its totient is φ = 42548910.

The previous prime is 42548899. The next prime is 42548921. The reversal of 42548911 is 11984524.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42548911 - 2²³ = 34160303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42548921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21274455 + 21274456.

It is an arithmetic number, because the mean of its divisors is an integer number (21274456).

Almost surely, 2^42548911 is an apocalyptic number.

42548911 is a deficient number, since it is larger than the sum of its proper divisors (1).

42548911 is an equidigital number, since it uses as much as digits as its factorization.

42548911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 34.

The square root of 42548911 is about 6522.9526289864. The cubic root of 42548911 is about 349.1104239213.

The spelling of 42548911 in words is "forty-two million, five hundred forty-eight thousand, nine hundred eleven".