143220540 has 96 divisors (see below), whose sum is σ = 424972800. Its totient is φ = 35963136.

The previous prime is 143220533. The next prime is 143220541. The reversal of 143220540 is 45022341.

143220540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143220541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 91686 + ... + 93234.

It is an arithmetic number, because the mean of its divisors is an integer number (4426800).

Almost surely, 2^143220540 is an apocalyptic number.

143220540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143220540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212486400).

143220540 is an abundant number, since it is smaller than the sum of its proper divisors (281752260).

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

143220540 is a wasteful number, since it uses less digits than its factorization.

143220540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1651 (or 1649 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 143220540 is about 11967.4784311483. The cubic root of 143220540 is about 523.2008436659.

Adding to 143220540 its reverse (45022341), we get a palindrome (188242881).

The spelling of 143220540 in words is "one hundred forty-three million, two hundred twenty thousand, five hundred forty".