139328143 has 2 divisors, whose sum is σ = 139328144. Its totient is φ = 139328142.

The previous prime is 139328131. The next prime is 139328171. The reversal of 139328143 is 341823931.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139328143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139328099 and 139328108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139328173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69664071 + 69664072.

It is an arithmetic number, because the mean of its divisors is an integer number (69664072).

Almost surely, 2^139328143 is an apocalyptic number.

139328143 is a deficient number, since it is larger than the sum of its proper divisors (1).

139328143 is an equidigital number, since it uses as much as digits as its factorization.

139328143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 139328143 is about 11803.7342819974. The cubic root of 139328143 is about 518.4174556542.

The spelling of 139328143 in words is "one hundred thirty-nine million, three hundred twenty-eight thousand, one hundred forty-three".