143540 has 12 divisors (see below), whose sum is σ = 301476. Its totient is φ = 57408.

The previous prime is 143537. The next prime is 143551. The reversal of 143540 is 45341.

It can be written as a sum of positive squares in 2 ways, for example, as 98596 + 44944 = 314^2 + 212^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3569 + ... + 3608.

It is an arithmetic number, because the mean of its divisors is an integer number (25123).

2¹⁴³⁵⁴⁰ is an apocalyptic number.

143540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

143540 is an abundant number, since it is smaller than the sum of its proper divisors (157936).

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

143540 is a wasteful number, since it uses less digits than its factorization.

143540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7186 (or 7184 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 143540 is about 378.8667311866. The cubic root of 143540 is about 52.3589562637.

Adding to 143540 its reverse (45341), we get a palindrome (188881).

The spelling of 143540 in words is "one hundred forty-three thousand, five hundred forty".