420995453 has 4 divisors (see below), whose sum is σ = 426762588. Its totient is φ = 415228320.

The previous prime is 420995437. The next prime is 420995461. The reversal of 420995453 is 354599024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 183927844 + 237067609 = 13562^2 + 15397^2 .

It is a cyclic number.

It is not a de Polignac number, because 420995453 - 2⁴ = 420995437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 420995453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420995153) 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 in 3 ways as a sum of consecutive naturals, for example, 2883458 + ... + 2883603.

It is an arithmetic number, because the mean of its divisors is an integer number (106690647).

Almost surely, 2^420995453 is an apocalyptic number.

It is an amenable number.

420995453 is a deficient number, since it is larger than the sum of its proper divisors (5767135).

420995453 is an equidigital number, since it uses as much as digits as its factorization.

420995453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767134.

The product of its (nonzero) digits is 194400, while the sum is 41.

The square root of 420995453 is about 20518.1737247738. The cubic root of 420995453 is about 749.4784243255.

The spelling of 420995453 in words is "four hundred twenty million, nine hundred ninety-five thousand, four hundred fifty-three".