421346633 has 4 divisors (see below), whose sum is σ = 425284560. Its totient is φ = 417408708.

The previous prime is 421346593. The next prime is 421346657. The reversal of 421346633 is 336643124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421346633 - 2²⁸ = 152911177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421346633.

It is not an unprimeable number, because it can be changed into a prime (421346833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1968803 + ... + 1969016.

It is an arithmetic number, because the mean of its divisors is an integer number (106321140).

Almost surely, 2^421346633 is an apocalyptic number.

It is an amenable number.

421346633 is a deficient number, since it is larger than the sum of its proper divisors (3937927).

421346633 is a wasteful number, since it uses less digits than its factorization.

421346633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937926.

The product of its digits is 31104, while the sum is 32.

The square root of 421346633 is about 20526.7297200504. The cubic root of 421346633 is about 749.6867628245.

Adding to 421346633 its reverse (336643124), we get a palindrome (757989757).

The spelling of 421346633 in words is "four hundred twenty-one million, three hundred forty-six thousand, six hundred thirty-three".