143541540 has 144 divisors (see below), whose sum is σ = 469188720. Its totient is φ = 35389440.

The previous prime is 143541529. The next prime is 143541553. The reversal of 143541540 is 45145341.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 10969344 + 132572196 = 3312^2 + 11514^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 186276 + ... + 187044.

It is an arithmetic number, because the mean of its divisors is an integer number (3258255).

Almost surely, 2^143541540 is an apocalyptic number.

143541540 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 143541540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234594360).

143541540 is an abundant number, since it is smaller than the sum of its proper divisors (325647180).

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

143541540 is a wasteful number, since it uses less digits than its factorization.

143541540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862 (or 857 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 143541540 is about 11980.8822713521. The cubic root of 143541540 is about 523.5914351117.

Adding to 143541540 its reverse (45145341), we get a palindrome (188686881).

The spelling of 143541540 in words is "one hundred forty-three million, five hundred forty-one thousand, five hundred forty".