421233133 has 2 divisors, whose sum is σ = 421233134. Its totient is φ = 421233132.

The previous prime is 421233103. The next prime is 421233143. The reversal of 421233133 is 331332124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 374693449 + 46539684 = 19357^2 + 6822^2 .

It is a cyclic number.

It is not a de Polignac number, because 421233133 - 2⁵ = 421233101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421233103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210616566 + 210616567.

It is an arithmetic number, because the mean of its divisors is an integer number (210616567).

Almost surely, 2^421233133 is an apocalyptic number.

It is an amenable number.

421233133 is a deficient number, since it is larger than the sum of its proper divisors (1).

421233133 is an equidigital number, since it uses as much as digits as its factorization.

421233133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 22.

The square root of 421233133 is about 20523.9648460038. The cubic root of 421233133 is about 749.6194413031.

Adding to 421233133 its reverse (331332124), we get a palindrome (752565257).

The spelling of 421233133 in words is "four hundred twenty-one million, two hundred thirty-three thousand, one hundred thirty-three".