143521072 has 40 divisors (see below), whose sum is σ = 303944832. Its totient is φ = 65356800.

The previous prime is 143521019. The next prime is 143521073. The reversal of 143521072 is 270125341.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (143521073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79 + ... + 16942.

Almost surely, 2^143521072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 143521072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151972416).

143521072 is an abundant number, since it is smaller than the sum of its proper divisors (160423760).

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

143521072 is a wasteful number, since it uses less digits than its factorization.

143521072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17077 (or 17071 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 143521072 is about 11980.0280467117. The cubic root of 143521072 is about 523.5665471271.

The spelling of 143521072 in words is "one hundred forty-three million, five hundred twenty-one thousand, seventy-two".