729543842 has 8 divisors (see below), whose sum is σ = 1100869056. Its totient is φ = 362587492.

The previous prime is 729543821. The next prime is 729543889. The reversal of 729543842 is 248345927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 729543793 and 729543802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1091798 + ... + 1092465.

It is an arithmetic number, because the mean of its divisors is an integer number (137608632).

Almost surely, 2^729543842 is an apocalyptic number.

729543842 is a deficient number, since it is larger than the sum of its proper divisors (371325214).

729543842 is a wasteful number, since it uses less digits than its factorization.

729543842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184432.

The product of its digits is 483840, while the sum is 44.

The square root of 729543842 is about 27010.0692705517. The cubic root of 729543842 is about 900.2237476620.

The spelling of 729543842 in words is "seven hundred twenty-nine million, five hundred forty-three thousand, eight hundred forty-two".