143638243 has 16 divisors (see below), whose sum is σ = 171763200. Its totient is φ = 117444096.

The previous prime is 143638241. The next prime is 143638249. The reversal of 143638243 is 342836341.

It is not a de Polignac number, because 143638243 - 2¹ = 143638241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143638199 and 143638208.

It is not an unprimeable number, because it can be changed into a prime (143638241) 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 15 ways as a sum of consecutive naturals, for example, 71296 + ... + 73282.

It is an arithmetic number, because the mean of its divisors is an integer number (10735200).

Almost surely, 2^143638243 is an apocalyptic number.

143638243 is a deficient number, since it is larger than the sum of its proper divisors (28124957).

143638243 is a wasteful number, since it uses less digits than its factorization.

143638243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466.

The product of its digits is 41472, while the sum is 34.

The square root of 143638243 is about 11984.9173130231. The cubic root of 143638243 is about 523.7089887631.

The spelling of 143638243 in words is "one hundred forty-three million, six hundred thirty-eight thousand, two hundred forty-three".