143242839 has 6 divisors (see below), whose sum is σ = 206906336. Its totient is φ = 95495220.

The previous prime is 143242829. The next prime is 143242849. The reversal of 143242839 is 938242341.

143242839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (143242829) and next prime (143242849).

It is not a de Polignac number, because 143242839 - 2⁷ = 143242711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143242829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7957927 + ... + 7957944.

Almost surely, 2^143242839 is an apocalyptic number.

143242839 is a deficient number, since it is larger than the sum of its proper divisors (63663497).

143242839 is a wasteful number, since it uses less digits than its factorization.

143242839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15915877 (or 15915874 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 143242839 is about 11968.4100447804. The cubic root of 143242839 is about 523.2279958471.

The spelling of 143242839 in words is "one hundred forty-three million, two hundred forty-two thousand, eight hundred thirty-nine".