1147143 has 16 divisors (see below), whose sum is σ = 1645056. Its totient is φ = 708480.

The previous prime is 1147141. The next prime is 1147169. The reversal of 1147143 is 3417411.

It is not a de Polignac number, because 1147143 - 2¹ = 1147141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4098 + ... + 4368.

It is an arithmetic number, because the mean of its divisors is an integer number (102816).

2^1147143 is an apocalyptic number.

1147143 is a deficient number, since it is larger than the sum of its proper divisors (497913).

1147143 is a wasteful number, since it uses less digits than its factorization.

1147143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374.

The product of its digits is 336, while the sum is 21.

The square root of 1147143 is about 1071.0476179890. The cubic root of 1147143 is about 104.6821225277.

The spelling of 1147143 in words is "one million, one hundred forty-seven thousand, one hundred forty-three".