947143 has 4 divisors (see below), whose sum is σ = 977728. Its totient is φ = 916560.

The previous prime is 947137. The next prime is 947171. The reversal of 947143 is 341749.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-947143 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (947183) 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 in 3 ways as a sum of consecutive naturals, for example, 15246 + ... + 15307.

It is an arithmetic number, because the mean of its divisors is an integer number (244432).

2⁹⁴⁷¹⁴³ is an apocalyptic number.

947143 is a deficient number, since it is larger than the sum of its proper divisors (30585).

947143 is a wasteful number, since it uses less digits than its factorization.

947143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30584.

The product of its digits is 3024, while the sum is 28.

The square root of 947143 is about 973.2127208375. The cubic root of 947143 is about 98.2061120880.

It can be divided in two parts, 9471 and 43, that multiplied together give a triangular number (407253 = T₉₀₂).

The spelling of 947143 in words is "nine hundred forty-seven thousand, one hundred forty-three".