239378143 has 2 divisors, whose sum is σ = 239378144. Its totient is φ = 239378142.

The previous prime is 239378141. The next prime is 239378159. The reversal of 239378143 is 341873932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 239378143 - 2¹ = 239378141 is a prime.

It is a super-2 number, since 2×239378143² = 114603790692256898, which contains 22 as substring.

Together with 239378141, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 239378096 and 239378105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239378141) 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 as a sum of consecutive naturals, namely, 119689071 + 119689072.

It is an arithmetic number, because the mean of its divisors is an integer number (119689072).

Almost surely, 2^239378143 is an apocalyptic number.

239378143 is a deficient number, since it is larger than the sum of its proper divisors (1).

239378143 is an equidigital number, since it uses as much as digits as its factorization.

239378143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 239378143 is about 15471.8500186629. The cubic root of 239378143 is about 620.9092996463.

The spelling of 239378143 in words is "two hundred thirty-nine million, three hundred seventy-eight thousand, one hundred forty-three".