420203404433 has 2 divisors, whose sum is σ = 420203404434. Its totient is φ = 420203404432.

The previous prime is 420203404427. The next prime is 420203404493. The reversal of 420203404433 is 334404302024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 308532478849 + 111670925584 = 555457^2 + 334172^2 .

It is a cyclic number.

It is not a de Polignac number, because 420203404433 - 2⁸ = 420203404177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420203404396 and 420203404405.

It is not a weakly prime, because it can be changed into another prime (420203404493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210101702216 + 210101702217.

It is an arithmetic number, because the mean of its divisors is an integer number (210101702217).

Almost surely, 2^420203404433 is an apocalyptic number.

It is an amenable number.

420203404433 is a deficient number, since it is larger than the sum of its proper divisors (1).

420203404433 is an equidigital number, since it uses as much as digits as its factorization.

420203404433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 29.

Adding to 420203404433 its reverse (334404302024), we get a palindrome (754607706457).

The spelling of 420203404433 in words is "four hundred twenty billion, two hundred three million, four hundred four thousand, four hundred thirty-three".