143372729 has 2 divisors, whose sum is σ = 143372730. Its totient is φ = 143372728.

The previous prime is 143372711. The next prime is 143372741. The reversal of 143372729 is 927273341.

143372729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111788329 + 31584400 = 10573^2 + 5620^2 .

It is an emirp because it is prime and its reverse (927273341) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-143372729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 143372692 and 143372701.

It is not a weakly prime, because it can be changed into another prime (143372759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71686364 + 71686365.

It is an arithmetic number, because the mean of its divisors is an integer number (71686365).

Almost surely, 2^143372729 is an apocalyptic number.

It is an amenable number.

143372729 is a deficient number, since it is larger than the sum of its proper divisors (1).

143372729 is an equidigital number, since it uses as much as digits as its factorization.

143372729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 38.

The square root of 143372729 is about 11973.8351834322. The cubic root of 143372729 is about 523.3860992770.

The spelling of 143372729 in words is "one hundred forty-three million, three hundred seventy-two thousand, seven hundred twenty-nine".