143634139 has 12 divisors (see below), whose sum is σ = 167168232. Its totient is φ = 122893760.

The previous prime is 143634137. The next prime is 143634151. The reversal of 143634139 is 931436341.

It is not a de Polignac number, because 143634139 - 2¹ = 143634137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (143634137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32857 + ... + 36970.

It is an arithmetic number, because the mean of its divisors is an integer number (13930686).

Almost surely, 2^143634139 is an apocalyptic number.

143634139 is a deficient number, since it is larger than the sum of its proper divisors (23534093).

143634139 is a wasteful number, since it uses less digits than its factorization.

143634139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69866 (or 69855 counting only the distinct ones).

The product of its digits is 23328, while the sum is 34.

The square root of 143634139 is about 11984.7460966013. The cubic root of 143634139 is about 523.7040009499.

The spelling of 143634139 in words is "one hundred forty-three million, six hundred thirty-four thousand, one hundred thirty-nine".