143224145 has 4 divisors (see below), whose sum is σ = 171868980. Its totient is φ = 114579312.

The previous prime is 143224139. The next prime is 143224153. The reversal of 143224145 is 541422341.

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

It can be written as a sum of positive squares in 2 ways, for example, as 83192641 + 60031504 = 9121^2 + 7748^2 .

It is a cyclic number.

It is not a de Polignac number, because 143224145 - 2⁸ = 143223889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14322410 + ... + 14322419.

It is an arithmetic number, because the mean of its divisors is an integer number (42967245).

Almost surely, 2^143224145 is an apocalyptic number.

It is an amenable number.

143224145 is a deficient number, since it is larger than the sum of its proper divisors (28644835).

143224145 is an equidigital number, since it uses as much as digits as its factorization.

143224145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28644834.

The product of its digits is 3840, while the sum is 26.

The square root of 143224145 is about 11967.6290467243. The cubic root of 143224145 is about 523.2052334535.

Adding to 143224145 its reverse (541422341), we get a palindrome (684646486).

The spelling of 143224145 in words is "one hundred forty-three million, two hundred twenty-four thousand, one hundred forty-five".