122399423 has 4 divisors (see below), whose sum is σ = 122559360. Its totient is φ = 122239488.

The previous prime is 122399393. The next prime is 122399429. The reversal of 122399423 is 324993221.

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 122399423 - 2⁶ = 122399359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122399429) 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, 78815 + ... + 80352.

It is an arithmetic number, because the mean of its divisors is an integer number (30639840).

Almost surely, 2^122399423 is an apocalyptic number.

122399423 is a deficient number, since it is larger than the sum of its proper divisors (159937).

122399423 is an equidigital number, since it uses as much as digits as its factorization.

122399423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159936.

The product of its digits is 23328, while the sum is 35.

The square root of 122399423 is about 11063.4272718719. The cubic root of 122399423 is about 496.5082359314.

The spelling of 122399423 in words is "one hundred twenty-two million, three hundred ninety-nine thousand, four hundred twenty-three".