42267881 has 2 divisors, whose sum is σ = 42267882. Its totient is φ = 42267880.

The previous prime is 42267857. The next prime is 42267919. The reversal of 42267881 is 18876224.

42267881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (42267919) can be obtained adding 42267881 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42042256 + 225625 = 6484^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 42267881 - 2¹⁸ = 42005737 is a prime.

It is a super-2 number, since 2×42267881² = 3573147528460322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42267811) 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 as a sum of consecutive naturals, namely, 21133940 + 21133941.

It is an arithmetic number, because the mean of its divisors is an integer number (21133941).

Almost surely, 2^42267881 is an apocalyptic number.

It is an amenable number.

42267881 is a deficient number, since it is larger than the sum of its proper divisors (1).

42267881 is an equidigital number, since it uses as much as digits as its factorization.

42267881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43008, while the sum is 38.

The square root of 42267881 is about 6501.3753160389. The cubic root of 42267881 is about 348.3401159113.

The spelling of 42267881 in words is "forty-two million, two hundred sixty-seven thousand, eight hundred eighty-one".