4067281 has 4 divisors (see below), whose sum is σ = 4077364. Its totient is φ = 4057200.

The previous prime is 4067263. The next prime is 4067291. The reversal of 4067281 is 1827604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7056 + 4060225 = 84^2 + 2015^2 .

It is a cyclic number.

It is not a de Polignac number, because 4067281 - 2¹⁹ = 3542993 is a prime.

It is a super-2 number, since 2×4067281² = 33085549465922, which contains 22 as substring.

It is a Duffinian number.

4067281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4067201) 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, 4410 + ... + 5251.

It is an arithmetic number, because the mean of its divisors is an integer number (1019341).

Almost surely, 2^4067281 is an apocalyptic number.

It is an amenable number.

4067281 is a deficient number, since it is larger than the sum of its proper divisors (10083).

4067281 is an equidigital number, since it uses as much as digits as its factorization.

4067281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10082.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 4067281 is about 2016.7501084666. The cubic root of 4067281 is about 159.6251772978.

The spelling of 4067281 in words is "four million, sixty-seven thousand, two hundred eighty-one".