720429 has 16 divisors (see below), whose sum is σ = 1026432. Its totient is φ = 448448.

The previous prime is 720413. The next prime is 720439. The reversal of 720429 is 924027.

It is a cyclic number.

It is not a de Polignac number, because 720429 - 2⁴ = 720413 is a prime.

720429 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 720399 and 720408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3559 + ... + 3755.

It is an arithmetic number, because the mean of its divisors is an integer number (64152).

2⁷²⁰⁴²⁹ is an apocalyptic number.

It is an amenable number.

720429 is a deficient number, since it is larger than the sum of its proper divisors (306003).

720429 is a wasteful number, since it uses less digits than its factorization.

720429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 720429 is about 848.7808904541. The cubic root of 720429 is about 89.6458925323.

The spelling of 720429 in words is "seven hundred twenty thousand, four hundred twenty-nine".