143047449 has 12 divisors (see below), whose sum is σ = 207051312. Its totient is φ = 95167800.

The previous prime is 143047403. The next prime is 143047451. The reversal of 143047449 is 944740341.

143047449 is a `hidden beast` number, since 143 + 0 + 474 + 49 = 666.

It is not a de Polignac number, because 143047449 - 2⁸ = 143047193 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (143045449) 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, 11767 + ... + 20604.

It is an arithmetic number, because the mean of its divisors is an integer number (17254276).

Almost surely, 2^143047449 is an apocalyptic number.

It is an amenable number.

143047449 is a deficient number, since it is larger than the sum of its proper divisors (64003863).

143047449 is a wasteful number, since it uses less digits than its factorization.

143047449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32868 (or 32865 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 143047449 is about 11960.2445209118. The cubic root of 143047449 is about 522.9899850261.

The spelling of 143047449 in words is "one hundred forty-three million, forty-seven thousand, four hundred forty-nine".