421321323 has 8 divisors (see below), whose sum is σ = 563328000. Its totient is φ = 280097768.

The previous prime is 421321253. The next prime is 421321391. The reversal of 421321323 is 323123124.

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 421321323 - 2⁹ = 421320811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 421321323.

It is not an unprimeable number, because it can be changed into a prime (421361323) 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, 194523 + ... + 196676.

It is an arithmetic number, because the mean of its divisors is an integer number (70416000).

Almost surely, 2^421321323 is an apocalyptic number.

421321323 is a deficient number, since it is larger than the sum of its proper divisors (142006677).

421321323 is a wasteful number, since it uses less digits than its factorization.

421321323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391561.

The product of its digits is 864, while the sum is 21.

The square root of 421321323 is about 20526.1131975832. The cubic root of 421321323 is about 749.6717514693.

Adding to 421321323 its reverse (323123124), we get a palindrome (744444447).

The spelling of 421321323 in words is "four hundred twenty-one million, three hundred twenty-one thousand, three hundred twenty-three".