22742 has 8 divisors (see below), whose sum is σ = 34776. Its totient is φ = 11152.

The previous prime is 22741. The next prime is 22751. The reversal of 22742 is 24722.

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 22742.

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 22742.

It is not an unprimeable number, because it can be changed into a prime (22741) 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, 98 + ... + 234.

It is an arithmetic number, because the mean of its divisors is an integer number (4347).

2²²⁷⁴² is an apocalyptic number.

22742 is a deficient number, since it is larger than the sum of its proper divisors (12034).

22742 is a wasteful number, since it uses less digits than its factorization.

22742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222.

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

The square root of 22742 is about 150.8045092164. The cubic root of 22742 is about 28.3319338025.

It can be divided in two parts, 2 and 2742, that added together give a cube (2744 = 14³).

The spelling of 22742 in words is "twenty-two thousand, seven hundred forty-two", and thus it is an iban number.