423332421 has 8 divisors (see below), whose sum is σ = 578210304. Its totient is φ = 275338080.

The previous prime is 423332417. The next prime is 423332461. The reversal of 423332421 is 124233324.

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

It is not a de Polignac number, because 423332421 - 2² = 423332417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 423332391 and 423332400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423332461) 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, 1720741 + ... + 1720986.

It is an arithmetic number, because the mean of its divisors is an integer number (72276288).

Almost surely, 2^423332421 is an apocalyptic number.

423332421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

423332421 is a deficient number, since it is larger than the sum of its proper divisors (154877883).

423332421 is a wasteful number, since it uses less digits than its factorization.

423332421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3441771.

The product of its digits is 3456, while the sum is 24.

The square root of 423332421 is about 20575.0436451542. The cubic root of 423332421 is about 750.8626642556.

Adding to 423332421 its reverse (124233324), we get a palindrome (547565745).

The spelling of 423332421 in words is "four hundred twenty-three million, three hundred thirty-two thousand, four hundred twenty-one".