42827281 has 4 divisors (see below), whose sum is σ = 48945472. Its totient is φ = 36709092.

The previous prime is 42827261. The next prime is 42827353. The reversal of 42827281 is 18272824.

42827281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42827281 - 2⁷ = 42827153 is a prime.

It is a super-2 number, since 2×42827281² = 3668351995705922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42827231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3059085 + ... + 3059098.

It is an arithmetic number, because the mean of its divisors is an integer number (12236368).

Almost surely, 2^42827281 is an apocalyptic number.

It is an amenable number.

42827281 is a deficient number, since it is larger than the sum of its proper divisors (6118191).

42827281 is an equidigital number, since it uses as much as digits as its factorization.

42827281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6118190.

The product of its digits is 14336, while the sum is 34.

The square root of 42827281 is about 6544.2555726377. The cubic root of 42827281 is about 349.8701041786.

The spelling of 42827281 in words is "forty-two million, eight hundred twenty-seven thousand, two hundred eighty-one".