723129 has 16 divisors (see below), whose sum is σ = 1114560. Its totient is φ = 412160.

The previous prime is 723127. The next prime is 723133. The reversal of 723129 is 921327.

It is a cyclic number.

It is not a de Polignac number, because 723129 - 2¹ = 723127 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 723099 and 723108.

It is not an unprimeable number, because it can be changed into a prime (723127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84 + ... + 1205.

It is an arithmetic number, because the mean of its divisors is an integer number (69660).

2⁷²³¹²⁹ is an apocalyptic number.

It is an amenable number.

723129 is a deficient number, since it is larger than the sum of its proper divisors (391431).

723129 is a wasteful number, since it uses less digits than its factorization.

723129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320.

The product of its digits is 756, while the sum is 24.

The square root of 723129 is about 850.3699195056. The cubic root of 723129 is about 89.7577435559.

It can be divided in two parts, 7231 and 29, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 723129 in words is "seven hundred twenty-three thousand, one hundred twenty-nine".