729284123 has 2 divisors, whose sum is σ = 729284124. Its totient is φ = 729284122.

The previous prime is 729284119. The next prime is 729284131. The reversal of 729284123 is 321482927.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 729284123 - 2² = 729284119 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (729284183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364642061 + 364642062.

It is an arithmetic number, because the mean of its divisors is an integer number (364642062).

Almost surely, 2^729284123 is an apocalyptic number.

729284123 is a deficient number, since it is larger than the sum of its proper divisors (1).

729284123 is an equidigital number, since it uses as much as digits as its factorization.

729284123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 729284123 is about 27005.2610244745. The cubic root of 729284123 is about 900.1169078586.

The spelling of 729284123 in words is "seven hundred twenty-nine million, two hundred eighty-four thousand, one hundred twenty-three".