123336421 has 8 divisors (see below), whose sum is σ = 133146720. Its totient is φ = 113572272.

The previous prime is 123336379. The next prime is 123336461. The reversal of 123336421 is 124633321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123336421 - 2⁷ = 123336293 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 (123336461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5875 + ... + 16768.

It is an arithmetic number, because the mean of its divisors is an integer number (16643340).

Almost surely, 2^123336421 is an apocalyptic number.

It is an amenable number.

123336421 is a deficient number, since it is larger than the sum of its proper divisors (9810299).

123336421 is a wasteful number, since it uses less digits than its factorization.

123336421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23075.

The product of its digits is 2592, while the sum is 25.

The square root of 123336421 is about 11105.6931796264. The cubic root of 123336421 is about 497.7719812785.

Adding to 123336421 its reverse (124633321), we get a palindrome (247969742).

The spelling of 123336421 in words is "one hundred twenty-three million, three hundred thirty-six thousand, four hundred twenty-one".