143729 has 2 divisors, whose sum is σ = 143730. Its totient is φ = 143728.

The previous prime is 143719. The next prime is 143743. The reversal of 143729 is 927341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142129 + 1600 = 377^2 + 40^2 .

It is a cyclic number.

It is not a de Polignac number, because 143729 - 2¹⁶ = 78193 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 143698 and 143707.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143729.

It is not a weakly prime, because it can be changed into another prime (143719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71864 + 71865.

It is an arithmetic number, because the mean of its divisors is an integer number (71865).

2¹⁴³⁷²⁹ is an apocalyptic number.

It is an amenable number.

143729 is a deficient number, since it is larger than the sum of its proper divisors (1).

143729 is an equidigital number, since it uses as much as digits as its factorization.

143729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 143729 is about 379.1160772112. The cubic root of 143729 is about 52.3819266381.

The spelling of 143729 in words is "one hundred forty-three thousand, seven hundred twenty-nine".