1012881 has 4 divisors (see below), whose sum is σ = 1350512. Its totient is φ = 675252.

The previous prime is 1012861. The next prime is 1012903. The reversal of 1012881 is 1882101.

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 1012881 - 2⁹ = 1012369 is a prime.

It is a super-2 number, since 2×1012881² = 2051855840322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

1012881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1012811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168811 + ... + 168816.

It is an arithmetic number, because the mean of its divisors is an integer number (337628).

2^1012881 is an apocalyptic number.

It is an amenable number.

1012881 is a deficient number, since it is larger than the sum of its proper divisors (337631).

1012881 is an equidigital number, since it uses as much as digits as its factorization.

1012881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337630.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 1012881 is about 1006.4198924902. The cubic root of 1012881 is about 100.4275361898.

Adding to 1012881 its reverse (1882101), we get a palindrome (2894982).

The spelling of 1012881 in words is "one million, twelve thousand, eight hundred eighty-one".