421421323 has 4 divisors (see below), whose sum is σ = 421475328. Its totient is φ = 421367320.

The previous prime is 421421309. The next prime is 421421333. The reversal of 421421323 is 323124124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421421323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421421294 and 421421303.

It is not an unprimeable number, because it can be changed into a prime (421421333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12811 + ... + 31732.

It is an arithmetic number, because the mean of its divisors is an integer number (105368832).

Almost surely, 2^421421323 is an apocalyptic number.

421421323 is a deficient number, since it is larger than the sum of its proper divisors (54005).

421421323 is an equidigital number, since it uses as much as digits as its factorization.

421421323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54004.

The product of its digits is 1152, while the sum is 22.

The square root of 421421323 is about 20528.5489745379. The cubic root of 421421323 is about 749.7310579421.

Adding to 421421323 its reverse (323124124), we get a palindrome (744545447).

The spelling of 421421323 in words is "four hundred twenty-one million, four hundred twenty-one thousand, three hundred twenty-three".