22406123 has 4 divisors (see below), whose sum is σ = 22436328. Its totient is φ = 22375920.

The previous prime is 22406107. The next prime is 22406129. The reversal of 22406123 is 32160422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22406123 - 2⁴ = 22406107 is a prime.

It is a super-2 number, since 2×22406123² = 1004068695782258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22406095 and 22406104.

It is not an unprimeable number, because it can be changed into a prime (22406129) 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, 13961 + ... + 15482.

It is an arithmetic number, because the mean of its divisors is an integer number (5609082).

Almost surely, 2^22406123 is an apocalyptic number.

22406123 is a deficient number, since it is larger than the sum of its proper divisors (30205).

22406123 is an equidigital number, since it uses as much as digits as its factorization.

22406123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30204.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 22406123 is about 4733.5106422189. The cubic root of 22406123 is about 281.9176318296.

Adding to 22406123 its reverse (32160422), we get a palindrome (54566545).

The spelling of 22406123 in words is "twenty-two million, four hundred six thousand, one hundred twenty-three".