143224520 has 16 divisors (see below), whose sum is σ = 322255260. Its totient is φ = 57289792.

The previous prime is 143224483. The next prime is 143224531. The reversal of 143224520 is 25422341.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 140327716 + 2896804 = 11846^2 + 1702^2 .

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, 1790267 + ... + 1790346.

Almost surely, 2^143224520 is an apocalyptic number.

143224520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143224520 is an abundant number, since it is smaller than the sum of its proper divisors (179030740).

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

143224520 is a wasteful number, since it uses less digits than its factorization.

143224520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580624 (or 3580620 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 143224520 is about 11967.6447139778. The cubic root of 143224520 is about 523.2056900845.

Adding to 143224520 its reverse (25422341), we get a palindrome (168646861).

It can be divided in two parts, 1432 and 24520, that added together give a palindrome (25952).

The spelling of 143224520 in words is "one hundred forty-three million, two hundred twenty-four thousand, five hundred twenty".