420007433 has 2 divisors, whose sum is σ = 420007434. Its totient is φ = 420007432.

The previous prime is 420007397. The next prime is 420007451. The reversal of 420007433 is 334700024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 249260944 + 170746489 = 15788^2 + 13067^2 .

It is a cyclic number.

It is not a de Polignac number, because 420007433 - 2⁸ = 420007177 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 420007399 and 420007408.

It is not a weakly prime, because it can be changed into another prime (420007333) 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, 210003716 + 210003717.

It is an arithmetic number, because the mean of its divisors is an integer number (210003717).

Almost surely, 2^420007433 is an apocalyptic number.

It is an amenable number.

420007433 is a deficient number, since it is larger than the sum of its proper divisors (1).

420007433 is an equidigital number, since it uses as much as digits as its factorization.

420007433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 420007433 is about 20494.0828777479. The cubic root of 420007433 is about 748.8916565361.

Adding to 420007433 its reverse (334700024), we get a palindrome (754707457).

The spelling of 420007433 in words is "four hundred twenty million, seven thousand, four hundred thirty-three".