421334423 has 8 divisors (see below), whose sum is σ = 435264000. Its totient is φ = 407426040.

The previous prime is 421334411. The next prime is 421334449. The reversal of 421334423 is 324433124.

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 421334423 - 2¹⁰ = 421333399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421334392 and 421334401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421334453) 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, 41936 + ... + 51002.

It is an arithmetic number, because the mean of its divisors is an integer number (54408000).

Almost surely, 2^421334423 is an apocalyptic number.

421334423 is a deficient number, since it is larger than the sum of its proper divisors (13929577).

421334423 is a wasteful number, since it uses less digits than its factorization.

421334423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10597.

The product of its digits is 6912, while the sum is 26.

The square root of 421334423 is about 20526.4323008164. The cubic root of 421334423 is about 749.6795211513.

Adding to 421334423 its reverse (324433124), we get a palindrome (745767547).

The spelling of 421334423 in words is "four hundred twenty-one million, three hundred thirty-four thousand, four hundred twenty-three".