421332023 has 4 divisors (see below), whose sum is σ = 481522320. Its totient is φ = 361141728.

The previous prime is 421332007. The next prime is 421332059. The reversal of 421332023 is 320233124.

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

It is a cyclic number.

It is not a de Polignac number, because 421332023 - 2⁴ = 421332007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421331986 and 421332004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421332623) 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, 30095138 + ... + 30095151.

It is an arithmetic number, because the mean of its divisors is an integer number (120380580).

Almost surely, 2^421332023 is an apocalyptic number.

421332023 is a deficient number, since it is larger than the sum of its proper divisors (60190297).

421332023 is an equidigital number, since it uses as much as digits as its factorization.

421332023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60190296.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 421332023 is about 20526.3738395266. The cubic root of 421332023 is about 749.6780977102.

Adding to 421332023 its reverse (320233124), we get a palindrome (741565147).

The spelling of 421332023 in words is "four hundred twenty-one million, three hundred thirty-two thousand, twenty-three".