421343433 has 24 divisors (see below), whose sum is σ = 698462336. Its totient is φ = 239760000.

The previous prime is 421343431. The next prime is 421343437. The reversal of 421343433 is 334343124.

It is not a de Polignac number, because 421343433 - 2¹ = 421343431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421343397 and 421343406.

It is not an unprimeable number, because it can be changed into a prime (421343431) 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 23 ways as a sum of consecutive naturals, for example, 1308 + ... + 29058.

Almost surely, 2^421343433 is an apocalyptic number.

It is an amenable number.

421343433 is a deficient number, since it is larger than the sum of its proper divisors (277118903).

421343433 is a wasteful number, since it uses less digits than its factorization.

421343433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28005 (or 28002 counting only the distinct ones).

The product of its digits is 10368, while the sum is 27.

The square root of 421343433 is about 20526.6517727563. The cubic root of 421343433 is about 749.6848649384.

Adding to 421343433 its reverse (334343124), we get a palindrome (755686557).

The spelling of 421343433 in words is "four hundred twenty-one million, three hundred forty-three thousand, four hundred thirty-three".