1143009 has 12 divisors (see below), whose sum is σ = 1886976. Its totient is φ = 653112.

The previous prime is 1142971. The next prime is 1143013. The reversal of 1143009 is 9003411.

It is not a de Polignac number, because 1143009 - 2⁷ = 1142881 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142982 and 1143000.

It is not an unprimeable number, because it can be changed into a prime (1143019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9009 + ... + 9134.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

2^1143009 is an apocalyptic number.

It is an amenable number.

1143009 is a deficient number, since it is larger than the sum of its proper divisors (743967).

1143009 is a wasteful number, since it uses less digits than its factorization.

1143009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18156 (or 18153 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1143009 is about 1069.1159899655. The cubic root of 1143009 is about 104.5562222741.

The spelling of 1143009 in words is "one million, one hundred forty-three thousand, nine".