123026401 has 4 divisors (see below), whose sum is σ = 125644032. Its totient is φ = 120408772.

The previous prime is 123026359. The next prime is 123026413. The reversal of 123026401 is 104620321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104620321 = 13 ⋅8047717.

It is a cyclic number.

It is not a de Polignac number, because 123026401 - 2¹¹ = 123024353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123026441) 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, 1308745 + ... + 1308838.

It is an arithmetic number, because the mean of its divisors is an integer number (31411008).

Almost surely, 2^123026401 is an apocalyptic number.

It is an amenable number.

123026401 is a deficient number, since it is larger than the sum of its proper divisors (2617631).

123026401 is an equidigital number, since it uses as much as digits as its factorization.

123026401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617630.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 123026401 is about 11091.7266915481. The cubic root of 123026401 is about 497.3545626743.

Adding to 123026401 its reverse (104620321), we get a palindrome (227646722).

The spelling of 123026401 in words is "one hundred twenty-three million, twenty-six thousand, four hundred one".