427281 has 4 divisors (see below), whose sum is σ = 569712. Its totient is φ = 284852.

The previous prime is 427279. The next prime is 427283. The reversal of 427281 is 182724.

427281 is digitally balanced in base 7, 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 an interprime number because it is at equal distance from previous prime (427279) and next prime (427283).

It is a cyclic number.

It is not a de Polignac number, because 427281 - 2¹ = 427279 is a prime.

It is a super-2 number, since 2×427281² = 365138105922, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

427281 is strictly pandigital in base 7.

427281 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 427281.

It is not an unprimeable number, because it can be changed into a prime (427283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71211 + ... + 71216.

It is an arithmetic number, because the mean of its divisors is an integer number (142428).

2⁴²⁷²⁸¹ is an apocalyptic number.

It is an amenable number.

427281 is a deficient number, since it is larger than the sum of its proper divisors (142431).

427281 is a wasteful number, since it uses less digits than its factorization.

427281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142430.

The product of its digits is 896, while the sum is 24.

The square root of 427281 is about 653.6673465915. The cubic root of 427281 is about 75.3189968455.

The spelling of 427281 in words is "four hundred twenty-seven thousand, two hundred eighty-one".