143541 has 12 divisors (see below), whose sum is σ = 212940. Its totient is φ = 93120.

The previous prime is 143537. The next prime is 143551. The reversal of 143541 is 145341.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18225 + 125316 = 135^2 + 354^2 .

It is not a de Polignac number, because 143541 - 2² = 143537 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175 + ... + 563.

It is an arithmetic number, because the mean of its divisors is an integer number (17745).

2¹⁴³⁵⁴¹ is an apocalyptic number.

It is an amenable number.

143541 is a deficient number, since it is larger than the sum of its proper divisors (69399).

143541 is a wasteful number, since it uses less digits than its factorization.

143541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 433 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 143541 is about 378.8680509095. The cubic root of 143541 is about 52.3590778531.

Adding to 143541 its reverse (145341), we get a palindrome (288882).

The spelling of 143541 in words is "one hundred forty-three thousand, five hundred forty-one".