122413421 has 4 divisors (see below), whose sum is σ = 131829852. Its totient is φ = 112996992.

The previous prime is 122413393. The next prime is 122413433. The reversal of 122413421 is 124314221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 124314221 = 89 ⋅1396789.

It can be written as a sum of positive squares in 2 ways, for example, as 37515625 + 84897796 = 6125^2 + 9214^2 .

It is a cyclic number.

It is not a de Polignac number, because 122413421 - 2²² = 118219117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122413393 and 122413402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122413471) 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, 4708196 + ... + 4708221.

It is an arithmetic number, because the mean of its divisors is an integer number (32957463).

Almost surely, 2^122413421 is an apocalyptic number.

It is an amenable number.

122413421 is a deficient number, since it is larger than the sum of its proper divisors (9416431).

122413421 is an equidigital number, since it uses as much as digits as its factorization.

122413421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9416430.

The product of its digits is 384, while the sum is 20.

The square root of 122413421 is about 11064.0598787244. The cubic root of 122413421 is about 496.5271626474.

Adding to 122413421 its reverse (124314221), we get a palindrome (246727642).

The spelling of 122413421 in words is "one hundred twenty-two million, four hundred thirteen thousand, four hundred twenty-one".