421433 has 2 divisors, whose sum is σ = 421434. Its totient is φ = 421432.

The previous prime is 421423. The next prime is 421453. The reversal of 421433 is 334124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327184 + 94249 = 572^2 + 307^2 .

It is a cyclic number.

It is not a de Polignac number, because 421433 - 2⁴ = 421417 is a prime.

It is not a weakly prime, because it can be changed into another prime (421423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210716 + 210717.

It is an arithmetic number, because the mean of its divisors is an integer number (210717).

2⁴²¹⁴³³ is an apocalyptic number.

It is an amenable number.

421433 is a deficient number, since it is larger than the sum of its proper divisors (1).

421433 is an equidigital number, since it uses as much as digits as its factorization.

421433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 17.

The square root of 421433 is about 649.1787119122. The cubic root of 421433 is about 74.9737982547.

Adding to 421433 its reverse (334124), we get a palindrome (755557).

The spelling of 421433 in words is "four hundred twenty-one thousand, four hundred thirty-three".