722742 has 16 divisors (see below), whose sum is σ = 1456320. Its totient is φ = 239112.

The previous prime is 722737. The next prime is 722749. The reversal of 722742 is 247227.

722742 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722749) by changing a digit.

722742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609 + ... + 1347.

It is an arithmetic number, because the mean of its divisors is an integer number (91020).

2⁷²²⁷⁴² is an apocalyptic number.

722742 is an abundant number, since it is smaller than the sum of its proper divisors (733578).

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

722742 is a wasteful number, since it uses less digits than its factorization.

722742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907.

The product of its digits is 1568, while the sum is 24.

The square root of 722742 is about 850.1423410230. The cubic root of 722742 is about 89.7417286884.

Adding to 722742 its reverse (247227), we get a palindrome (969969).

The spelling of 722742 in words is "seven hundred twenty-two thousand, seven hundred forty-two", and thus it is an iban number.