1040287 has 4 divisors (see below), whose sum is σ = 1042416. Its totient is φ = 1038160.

The previous prime is 1040227. The next prime is 1040311. The reversal of 1040287 is 7820401.

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

It is a cyclic number.

It is not a de Polignac number, because 1040287 - 2⁷ = 1040159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78 + ... + 1444.

It is an arithmetic number, because the mean of its divisors is an integer number (260604).

2^1040287 is an apocalyptic number.

1040287 is a deficient number, since it is larger than the sum of its proper divisors (2129).

1040287 is an equidigital number, since it uses as much as digits as its factorization.

1040287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1040287 is about 1019.9446063390. The cubic root of 1040287 is about 101.3252592924.

Adding to 1040287 its reverse (7820401), we get a palindrome (8860688).

The spelling of 1040287 in words is "one million, forty thousand, two hundred eighty-seven".