723542 has 8 divisors (see below), whose sum is σ = 1095600. Its totient is φ = 358344.

The previous prime is 723529. The next prime is 723551. The reversal of 723542 is 245327.

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

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 723542.

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, 1442 + ... + 1877.

It is an arithmetic number, because the mean of its divisors is an integer number (136950).

2⁷²³⁵⁴² is an apocalyptic number.

723542 is a deficient number, since it is larger than the sum of its proper divisors (372058).

723542 is a wasteful number, since it uses less digits than its factorization.

723542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430.

The product of its digits is 1680, while the sum is 23.

The square root of 723542 is about 850.6127203375. The cubic root of 723542 is about 89.7748280563.

Adding to 723542 its reverse (245327), we get a palindrome (968869).

The spelling of 723542 in words is "seven hundred twenty-three thousand, five hundred forty-two".