143530121 has 16 divisors (see below), whose sum is σ = 167961600. Its totient is φ = 120114960.

The previous prime is 143530111. The next prime is 143530169. The reversal of 143530121 is 121035341.

It is a de Polignac number, because none of the positive numbers 2^k-143530121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143530093 and 143530102.

It is not an unprimeable number, because it can be changed into a prime (143530111) 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, 51830 + ... + 54528.

It is an arithmetic number, because the mean of its divisors is an integer number (10497600).

Almost surely, 2^143530121 is an apocalyptic number.

It is an amenable number.

143530121 is a deficient number, since it is larger than the sum of its proper divisors (24431479).

143530121 is a wasteful number, since it uses less digits than its factorization.

143530121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 143530121 is about 11980.4057109933. The cubic root of 143530121 is about 523.5775505151.

Adding to 143530121 its reverse (121035341), we get a palindrome (264565462).

The spelling of 143530121 in words is "one hundred forty-three million, five hundred thirty thousand, one hundred twenty-one".