421233443 has 8 divisors (see below), whose sum is σ = 425618160. Its totient is φ = 416858400.

The previous prime is 421233413. The next prime is 421233479. The reversal of 421233443 is 344332124.

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 421233443 - 2⁸ = 421233187 is a prime.

It is a super-2 number, since 2×421233443² = 354875227003268498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421233403) 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 7 ways as a sum of consecutive naturals, for example, 112721 + ... + 116397.

It is an arithmetic number, because the mean of its divisors is an integer number (53202270).

Almost surely, 2^421233443 is an apocalyptic number.

421233443 is a deficient number, since it is larger than the sum of its proper divisors (4384717).

421233443 is a wasteful number, since it uses less digits than its factorization.

421233443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4837.

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

The square root of 421233443 is about 20523.9723981494. The cubic root of 421233443 is about 749.6196251934.

Adding to 421233443 its reverse (344332124), we get a palindrome (765565567).

The spelling of 421233443 in words is "four hundred twenty-one million, two hundred thirty-three thousand, four hundred forty-three".