122421423 has 4 divisors (see below), whose sum is σ = 163228568. Its totient is φ = 81614280.

The previous prime is 122421421. The next prime is 122421443. The reversal of 122421423 is 324124221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324124221 = 3 ⋅108041407.

It is not a de Polignac number, because 122421423 - 2¹ = 122421421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122421423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122421421) 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, 20403568 + ... + 20403573.

It is an arithmetic number, because the mean of its divisors is an integer number (40807142).

Almost surely, 2^122421423 is an apocalyptic number.

122421423 is a deficient number, since it is larger than the sum of its proper divisors (40807145).

122421423 is an equidigital number, since it uses as much as digits as its factorization.

122421423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40807144.

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

The square root of 122421423 is about 11064.4214941406. The cubic root of 122421423 is about 496.5379815150.

Adding to 122421423 its reverse (324124221), we get a palindrome (446545644).

The spelling of 122421423 in words is "one hundred twenty-two million, four hundred twenty-one thousand, four hundred twenty-three".