143521012 has 12 divisors (see below), whose sum is σ = 262082016. Its totient is φ = 68640440.

The previous prime is 143521009. The next prime is 143521013. The reversal of 143521012 is 210125341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143521013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779914 + ... + 780097.

It is an arithmetic number, because the mean of its divisors is an integer number (21840168).

Almost surely, 2^143521012 is an apocalyptic number.

It is an amenable number.

143521012 is a deficient number, since it is larger than the sum of its proper divisors (118561004).

143521012 is a wasteful number, since it uses less digits than its factorization.

143521012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560038 (or 1560036 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 143521012 is about 11980.0255425437. The cubic root of 143521012 is about 523.5664741668.

Adding to 143521012 its reverse (210125341), we get a palindrome (353646353).

The spelling of 143521012 in words is "one hundred forty-three million, five hundred twenty-one thousand, twelve".