123626 has 4 divisors (see below), whose sum is σ = 185442. Its totient is φ = 61812.

The previous prime is 123619. The next prime is 123631. The reversal of 123626 is 626321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 626321 = 179 ⋅3499.

It can be written as a sum of positive squares in only one way, i.e., 89401 + 34225 = 299^2 + 185^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123598 and 123607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30905 + ... + 30908.

2¹²³⁶²⁶ is an apocalyptic number.

123626 is a deficient number, since it is larger than the sum of its proper divisors (61816).

123626 is an equidigital number, since it uses as much as digits as its factorization.

123626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61815.

The product of its digits is 432, while the sum is 20.

The square root of 123626 is about 351.6048918886. The cubic root of 123626 is about 49.8161246258.

Adding to 123626 its reverse (626321), we get a palindrome (749947).

The spelling of 123626 in words is "one hundred twenty-three thousand, six hundred twenty-six".