123424401 has 16 divisors (see below), whose sum is σ = 168664320. Its totient is φ = 80255760.

The previous prime is 123424373. The next prime is 123424429. The reversal of 123424401 is 104424321.

It is an interprime number because it is at equal distance from previous prime (123424373) and next prime (123424429).

It is not a de Polignac number, because 123424401 - 2¹⁴ = 123408017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (123424501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20526 + ... + 25848.

It is an arithmetic number, because the mean of its divisors is an integer number (10541520).

Almost surely, 2^123424401 is an apocalyptic number.

It is an amenable number.

123424401 is a deficient number, since it is larger than the sum of its proper divisors (45239919).

123424401 is a wasteful number, since it uses less digits than its factorization.

123424401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5516.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 123424401 is about 11109.6535049478. The cubic root of 123424401 is about 497.8903122885.

Adding to 123424401 its reverse (104424321), we get a palindrome (227848722).

The spelling of 123424401 in words is "one hundred twenty-three million, four hundred twenty-four thousand, four hundred one".