723942 has 24 divisors (see below), whose sum is σ = 1612416. Its totient is φ = 234576.

The previous prime is 723923. The next prime is 723949. The reversal of 723942 is 249327.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 723942.

It is not an unprimeable number, because it can be changed into a prime (723949) by changing a digit.

723942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123 + ... + 1209.

It is an arithmetic number, because the mean of its divisors is an integer number (67184).

2⁷²³⁹⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 723942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (806208).

723942 is an abundant number, since it is smaller than the sum of its proper divisors (888474).

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

723942 is a wasteful number, since it uses less digits than its factorization.

723942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1129 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 723942 is about 850.8478124788. The cubic root of 723942 is about 89.7913685915.

The spelling of 723942 in words is "seven hundred twenty-three thousand, nine hundred forty-two".