143375409 has 12 divisors (see below), whose sum is σ = 209234116. Its totient is φ = 94597632.

The previous prime is 143375389. The next prime is 143375411. The reversal of 143375409 is 904573341.

It can be written as a sum of positive squares in 2 ways, for example, as 82301184 + 61074225 = 9072^2 + 7815^2 .

It is not a de Polignac number, because 143375409 - 2⁸ = 143375153 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143375429) 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 11 ways as a sum of consecutive naturals, for example, 81244 + ... + 82989.

Almost surely, 2^143375409 is an apocalyptic number.

It is an amenable number.

143375409 is a deficient number, since it is larger than the sum of its proper divisors (65858707).

143375409 is a wasteful number, since it uses less digits than its factorization.

143375409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164336 (or 164333 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 143375409 is about 11973.9470935861. The cubic root of 143375409 is about 523.3893603947.

The spelling of 143375409 in words is "one hundred forty-three million, three hundred seventy-five thousand, four hundred nine".