143121768 has 64 divisors (see below), whose sum is σ = 367960320. Its totient is φ = 46368000.

The previous prime is 143121763. The next prime is 143121791. The reversal of 143121768 is 867121341.

143121768 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (143121763) 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, 203818 + ... + 204518.

It is an arithmetic number, because the mean of its divisors is an integer number (5749380).

Almost surely, 2^143121768 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 143121768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183980160).

143121768 is an abundant number, since it is smaller than the sum of its proper divisors (224838552).

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

143121768 is a wasteful number, since it uses less digits than its factorization.

143121768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 934 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 143121768 is about 11963.3510355586. The cubic root of 143121768 is about 523.0805409075.

The spelling of 143121768 in words is "one hundred forty-three million, one hundred twenty-one thousand, seven hundred sixty-eight".