143247 has 8 divisors (see below), whose sum is σ = 205744. Its totient is φ = 88128.

The previous prime is 143243. The next prime is 143249. The reversal of 143247 is 742341.

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

It is not a de Polignac number, because 143247 - 2² = 143243 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143243) 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, 1798 + ... + 1875.

It is an arithmetic number, because the mean of its divisors is an integer number (25718).

2¹⁴³²⁴⁷ is an apocalyptic number.

143247 is a deficient number, since it is larger than the sum of its proper divisors (62497).

143247 is a wasteful number, since it uses less digits than its factorization.

143247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689.

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

The square root of 143247 is about 378.4798541534. The cubic root of 143247 is about 52.3233062140.

Adding to 143247 its reverse (742341), we get a palindrome (885588).

The spelling of 143247 in words is "one hundred forty-three thousand, two hundred forty-seven", and thus it is an iban number.