421425233 has 4 divisors (see below), whose sum is σ = 421540020. Its totient is φ = 421310448.

The previous prime is 421425211. The next prime is 421425239. The reversal of 421425233 is 332524124.

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

It can be written as a sum of positive squares in 2 ways, for example, as 222248464 + 199176769 = 14908^2 + 14113^2 .

It is a cyclic number.

It is not a de Polignac number, because 421425233 - 2⁸ = 421424977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421425239) 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, 51698 + ... + 59291.

It is an arithmetic number, because the mean of its divisors is an integer number (105385005).

Almost surely, 2^421425233 is an apocalyptic number.

It is an amenable number.

421425233 is a deficient number, since it is larger than the sum of its proper divisors (114787).

421425233 is a wasteful number, since it uses less digits than its factorization.

421425233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114786.

The product of its digits is 5760, while the sum is 26.

The square root of 421425233 is about 20528.6442075457. The cubic root of 421425233 is about 749.7333766346.

Adding to 421425233 its reverse (332524124), we get a palindrome (753949357).

The spelling of 421425233 in words is "four hundred twenty-one million, four hundred twenty-five thousand, two hundred thirty-three".