42722 has 8 divisors (see below), whose sum is σ = 65772. Its totient is φ = 20800.

The previous prime is 42719. The next prime is 42727. The reversal of 42722 is 22724.

42722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 36481 + 6241 = 191^2 + 79^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 42722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42727) 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, 179 + ... + 342.

2⁴²⁷²² is an apocalyptic number.

42722 is a deficient number, since it is larger than the sum of its proper divisors (23050).

42722 is a wasteful number, since it uses less digits than its factorization.

42722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564.

The product of its digits is 224, while the sum is 17.

The square root of 42722 is about 206.6930090738. The cubic root of 42722 is about 34.9583177263.

The spelling of 42722 in words is "forty-two thousand, seven hundred twenty-two", and thus it is an iban number.