143224 has 8 divisors (see below), whose sum is σ = 268560. Its totient is φ = 71608.

The previous prime is 143197. The next prime is 143239. The reversal of 143224 is 422341.

143224 = T₅₂ + T₅₃ + ... + T₉₉.

143224 = 87² + 88² + ... + 102².

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×143224² = 41026228352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 143198 and 143207.

It is a congruent number.

It is an unprimeable number.

143224 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8944 + ... + 8959.

It is an arithmetic number, because the mean of its divisors is an integer number (33570).

2¹⁴³²²⁴ is an apocalyptic number.

It is an amenable number.

143224 is a deficient number, since it is larger than the sum of its proper divisors (125336).

143224 is a wasteful number, since it uses less digits than its factorization.

143224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17909 (or 17905 counting only the distinct ones).

The product of its digits is 192, while the sum is 16.

The square root of 143224 is about 378.4494682253. The cubic root of 143224 is about 52.3205056889.

Adding to 143224 its reverse (422341), we get a palindrome (565565).

The spelling of 143224 in words is "one hundred forty-three thousand, two hundred twenty-four", and thus it is an iban number.