22540123 has 4 divisors (see below), whose sum is σ = 22568728. Its totient is φ = 22511520.

The previous prime is 22540121. The next prime is 22540153. The reversal of 22540123 is 32104522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32104522 = 2 ⋅16052261.

It is a cyclic number.

It is not a de Polignac number, because 22540123 - 2¹ = 22540121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22540123.

It is not an unprimeable number, because it can be changed into a prime (22540121) 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, 13086 + ... + 14707.

It is an arithmetic number, because the mean of its divisors is an integer number (5642182).

Almost surely, 2^22540123 is an apocalyptic number.

22540123 is a deficient number, since it is larger than the sum of its proper divisors (28605).

22540123 is an equidigital number, since it uses as much as digits as its factorization.

22540123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28604.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 22540123 is about 4747.6439419990. The cubic root of 22540123 is about 282.4785187415.

Adding to 22540123 its reverse (32104522), we get a palindrome (54644645).

The spelling of 22540123 in words is "twenty-two million, five hundred forty thousand, one hundred twenty-three".