421522323 has 8 divisors (see below), whose sum is σ = 562189248. Its totient is φ = 280935144.

The previous prime is 421522307. The next prime is 421522331. The reversal of 421522323 is 323225124.

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

It is not a de Polignac number, because 421522323 - 2⁴ = 421522307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421522293 and 421522302.

It is not an unprimeable number, because it can be changed into a prime (421522333) 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, 6261 + ... + 29702.

It is an arithmetic number, because the mean of its divisors is an integer number (70273656).

Almost surely, 2^421522323 is an apocalyptic number.

421522323 is a deficient number, since it is larger than the sum of its proper divisors (140666925).

421522323 is a wasteful number, since it uses less digits than its factorization.

421522323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39873.

The product of its digits is 2880, while the sum is 24.

The square root of 421522323 is about 20531.0088159350. The cubic root of 421522323 is about 749.7909479573.

Adding to 421522323 its reverse (323225124), we get a palindrome (744747447).

The spelling of 421522323 in words is "four hundred twenty-one million, five hundred twenty-two thousand, three hundred twenty-three".