123226406 has 4 divisors (see below), whose sum is σ = 184839612. Its totient is φ = 61613202.

The previous prime is 123226403. The next prime is 123226417. The reversal of 123226406 is 604622321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604622321 = 23 ⋅26287927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123226403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30806600 + ... + 30806603.

It is an arithmetic number, because the mean of its divisors is an integer number (46209903).

Almost surely, 2^123226406 is an apocalyptic number.

123226406 is a deficient number, since it is larger than the sum of its proper divisors (61613206).

123226406 is an equidigital number, since it uses as much as digits as its factorization.

123226406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61613205.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 123226406 is about 11100.7389844100. The cubic root of 123226406 is about 497.6239345116.

Adding to 123226406 its reverse (604622321), we get a palindrome (727848727).

The spelling of 123226406 in words is "one hundred twenty-three million, two hundred twenty-six thousand, four hundred six".