42427091 has 6 divisors (see below), whose sum is σ = 49354020. Its totient is φ = 36366036.

The previous prime is 42427081. The next prime is 42427097. The reversal of 42427091 is 19072424.

42427091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-42427091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42427097) 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 5 ways as a sum of consecutive naturals, for example, 432881 + ... + 432978.

It is an arithmetic number, because the mean of its divisors is an integer number (8225670).

Almost surely, 2^42427091 is an apocalyptic number.

42427091 is a deficient number, since it is larger than the sum of its proper divisors (6926929).

42427091 is an equidigital number, since it uses as much as digits as its factorization.

42427091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865873 (or 865866 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 42427091 is about 6513.6081398868. The cubic root of 42427091 is about 348.7769309847.

The spelling of 42427091 in words is "forty-two million, four hundred twenty-seven thousand, ninety-one".