247143 has 8 divisors (see below), whose sum is σ = 354928. Its totient is φ = 152064.

The previous prime is 247141. The next prime is 247183. The reversal of 247143 is 341742.

247143 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 247143 - 2¹ = 247141 is a prime.

It is a super-2 number, since 2×247143² = 122159324898, which contains 22 as substring.

It is a Duffinian number.

247143 is strictly pandigital in base 7.

It is a nialpdrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 247143.

It is not an unprimeable number, because it can be changed into a prime (247141) 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 in 7 ways as a sum of consecutive naturals, for example, 3130 + ... + 3207.

It is an arithmetic number, because the mean of its divisors is an integer number (44366).

2²⁴⁷¹⁴³ is an apocalyptic number.

247143 is a deficient number, since it is larger than the sum of its proper divisors (107785).

247143 is a wasteful number, since it uses less digits than its factorization.

247143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6353.

The product of its digits is 672, while the sum is 21.

The square root of 247143 is about 497.1347905750. The cubic root of 247143 is about 62.7551595468.

Adding to 247143 its reverse (341742), we get a palindrome (588885).

The spelling of 247143 in words is "two hundred forty-seven thousand, one hundred forty-three", and thus it is an iban number.