143540224 has 30 divisors (see below), whose sum is σ = 287104454. Its totient is φ = 71761920.

The previous prime is 143540219. The next prime is 143540239. The reversal of 143540224 is 422045341.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 92160000 + 51380224 = 9600^2 + 7168^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12004 + ... + 20764.

Almost surely, 2^143540224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143540224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143552227).

143540224 is an abundant number, since it is smaller than the sum of its proper divisors (143564230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

143540224 is an frugal number, since it uses more digits than its factorization.

143540224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8789 (or 8763 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 143540224 is about 11980.8273503961. The cubic root of 143540224 is about 523.5898349978.

Adding to 143540224 its reverse (422045341), we get a palindrome (565585565).

The spelling of 143540224 in words is "one hundred forty-three million, five hundred forty thousand, two hundred twenty-four".