1143487 has 2 divisors, whose sum is σ = 1143488. Its totient is φ = 1143486.

The previous prime is 1143481. The next prime is 1143529. The reversal of 1143487 is 7843411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143487 - 2¹⁵ = 1110719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143481) 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 as a sum of consecutive naturals, namely, 571743 + 571744.

It is an arithmetic number, because the mean of its divisors is an integer number (571744).

2^1143487 is an apocalyptic number.

1143487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143487 is an equidigital number, since it uses as much as digits as its factorization.

1143487 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1143487 is about 1069.3395157760. The cubic root of 1143487 is about 104.5707951862.

Adding to 1143487 its reverse (7843411), we get a palindrome (8986898).

The spelling of 1143487 in words is "one million, one hundred forty-three thousand, four hundred eighty-seven".