143132521 has 16 divisors (see below), whose sum is σ = 167650560. Its totient is φ = 119669760.

The previous prime is 143132471. The next prime is 143132533. The reversal of 143132521 is 125231341.

It is a happy number.

It is not a de Polignac number, because 143132521 - 2⁷ = 143132393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143132492 and 143132501.

It is not an unprimeable number, because it can be changed into a prime (143132581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46725 + ... + 49693.

It is an arithmetic number, because the mean of its divisors is an integer number (10478160).

Almost surely, 2^143132521 is an apocalyptic number.

It is an amenable number.

143132521 is a deficient number, since it is larger than the sum of its proper divisors (24518039).

143132521 is an equidigital number, since it uses as much as digits as its factorization.

143132521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3144.

The product of its digits is 720, while the sum is 22.

The square root of 143132521 is about 11963.8004413313. The cubic root of 143132521 is about 523.0936405784.

Adding to 143132521 its reverse (125231341), we get a palindrome (268363862).

The spelling of 143132521 in words is "one hundred forty-three million, one hundred thirty-two thousand, five hundred twenty-one".