143404429 has 18 divisors (see below), whose sum is σ = 171083562. Its totient is φ = 119851200.

The previous prime is 143404423. The next prime is 143404447. The reversal of 143404429 is 924404341.

It can be written as a sum of positive squares in 3 ways, for example, as 38812900 + 104591529 = 6230^2 + 10227^2 .

It is not a de Polignac number, because 143404429 - 2⁷ = 143404301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143404429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143404423) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 81499 + ... + 83239.

Almost surely, 2^143404429 is an apocalyptic number.

It is an amenable number.

143404429 is a deficient number, since it is larger than the sum of its proper divisors (27679133).

143404429 is an equidigital number, since it uses as much as digits as its factorization.

143404429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1789 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 143404429 is about 11975.1588298444. The cubic root of 143404429 is about 523.4246703424.

It can be divided in two parts, 14340 and 4429, that added together give a square (18769 = 137²).

The spelling of 143404429 in words is "one hundred forty-three million, four hundred four thousand, four hundred twenty-nine".