729642 has 8 divisors (see below), whose sum is σ = 1459296. Its totient is φ = 243212.

The previous prime is 729637. The next prime is 729643. The reversal of 729642 is 246927.

It is a happy number.

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

729642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (729643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60798 + ... + 60809.

It is an arithmetic number, because the mean of its divisors is an integer number (182412).

2⁷²⁹⁶⁴² is an apocalyptic number.

729642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

729642 is a wasteful number, since it uses less digits than its factorization.

729642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121612.

The product of its digits is 6048, while the sum is 30.

The square root of 729642 is about 854.1908451862. The cubic root of 729642 is about 90.0264120013.

The spelling of 729642 in words is "seven hundred twenty-nine thousand, six hundred forty-two".