1142287 has 2 divisors, whose sum is σ = 1142288. Its totient is φ = 1142286.

The previous prime is 1142279. The next prime is 1142311. The reversal of 1142287 is 7822411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1142287 - 2³ = 1142279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142237) 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 as a sum of consecutive naturals, namely, 571143 + 571144.

It is an arithmetic number, because the mean of its divisors is an integer number (571144).

2^1142287 is an apocalyptic number.

1142287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142287 is an equidigital number, since it uses as much as digits as its factorization.

1142287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 896, while the sum is 25.

The square root of 1142287 is about 1068.7782744798. The cubic root of 1142287 is about 104.5342027645.

Adding to 1142287 its reverse (7822411), we get a palindrome (8964698).

It can be divided in two parts, 114 and 2287, that added together give a 4-th power (2401 = 7⁴).

The spelling of 1142287 in words is "one million, one hundred forty-two thousand, two hundred eighty-seven".