421344033 has 32 divisors (see below), whose sum is σ = 641654784. Its totient is φ = 243600000.

The previous prime is 421344013. The next prime is 421344089. The reversal of 421344033 is 330443124.

It is not a de Polignac number, because 421344033 - 2⁸ = 421343777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421343994 and 421344012.

It is not an unprimeable number, because it can be changed into a prime (421344013) 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 31 ways as a sum of consecutive naturals, for example, 69733 + ... + 75533.

It is an arithmetic number, because the mean of its divisors is an integer number (20051712).

Almost surely, 2^421344033 is an apocalyptic number.

It is an amenable number.

421344033 is a deficient number, since it is larger than the sum of its proper divisors (220310751).

421344033 is a wasteful number, since it uses less digits than its factorization.

421344033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5917.

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

The square root of 421344033 is about 20526.6663878965. Note that the first 3 decimals coincide. The cubic root of 421344033 is about 749.6852207928.

Adding to 421344033 its reverse (330443124), we get a palindrome (751787157).

Subtracting from 421344033 its reverse (330443124), we obtain a palindrome (90900909).

The spelling of 421344033 in words is "four hundred twenty-one million, three hundred forty-four thousand, thirty-three".