723642 has 8 divisors (see below), whose sum is σ = 1447296. Its totient is φ = 241212.

The previous prime is 723623. The next prime is 723661. The reversal of 723642 is 246327.

723642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (723623) and next prime (723661).

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

723642 is an admirable number.

It is a d-powerful number, because it can be written as 7³ + 2¹⁷ + 6³ + 3⁷ + 4⁸ + 2¹⁹ .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 723642.

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, 60298 + ... + 60309.

It is an arithmetic number, because the mean of its divisors is an integer number (180912).

2⁷²³⁶⁴² is an apocalyptic number.

723642 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.

723642 is a wasteful number, since it uses less digits than its factorization.

723642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120612.

The product of its digits is 2016, while the sum is 24.

The square root of 723642 is about 850.6714994638. The cubic root of 723642 is about 89.7789637615.

Adding to 723642 its reverse (246327), we get a palindrome (969969).

It can be divided in two parts, 723 and 642, that multiplied together give a triangular number (464166 = T₉₆₃).

The spelling of 723642 in words is "seven hundred twenty-three thousand, six hundred forty-two".