143445540 has 144 divisors (see below), whose sum is σ = 472977792. Its totient is φ = 32385024.

The previous prime is 143445529. The next prime is 143445557. The reversal of 143445540 is 45544341.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 143445498 and 143445507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 284929 + ... + 285431.

It is an arithmetic number, because the mean of its divisors is an integer number (3284568).

Almost surely, 2^143445540 is an apocalyptic number.

143445540 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 143445540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236488896).

143445540 is an abundant number, since it is smaller than the sum of its proper divisors (329532252).

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

143445540 is a wasteful number, since it uses less digits than its factorization.

143445540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 617 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 143445540 is about 11976.8752185201. The cubic root of 143445540 is about 523.4746838039.

Adding to 143445540 its reverse (45544341), we get a palindrome (188989881).

The spelling of 143445540 in words is "one hundred forty-three million, four hundred forty-five thousand, five hundred forty".