420453443407 has 2 divisors, whose sum is σ = 420453443408. Its totient is φ = 420453443406.

The previous prime is 420453443387. The next prime is 420453443437. The reversal of 420453443407 is 704344354024.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420453443407 - 2¹⁹ = 420452919119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 420453443407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420453443437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210226721703 + 210226721704.

It is an arithmetic number, because the mean of its divisors is an integer number (210226721704).

Almost surely, 2^420453443407 is an apocalyptic number.

420453443407 is a deficient number, since it is larger than the sum of its proper divisors (1).

420453443407 is an equidigital number, since it uses as much as digits as its factorization.

420453443407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 645120, while the sum is 40.

The spelling of 420453443407 in words is "four hundred twenty billion, four hundred fifty-three million, four hundred forty-three thousand, four hundred seven".