143428109 has 8 divisors (see below), whose sum is σ = 156554400. Its totient is φ = 130316400.

The previous prime is 143428081. The next prime is 143428139. The reversal of 143428109 is 901824341.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 143428109 - 2¹² = 143424013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143428139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32942 + ... + 37040.

It is an arithmetic number, because the mean of its divisors is an integer number (19569300).

Almost surely, 2^143428109 is an apocalyptic number.

It is an amenable number.

143428109 is a deficient number, since it is larger than the sum of its proper divisors (13126291).

143428109 is a wasteful number, since it uses less digits than its factorization.

143428109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7291.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 143428109 is about 11976.1475024317. The cubic root of 143428109 is about 523.4534793411.

The spelling of 143428109 in words is "one hundred forty-three million, four hundred twenty-eight thousand, one hundred nine".