420595605289 has 4 divisors (see below), whose sum is σ = 421148294100. Its totient is φ = 420042916480.

The previous prime is 420595605179. The next prime is 420595605317. The reversal of 420595605289 is 982506595024.

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 134512897600 + 286082707689 = 366760^2 + 534867^2 .

It is a cyclic number.

It is not a de Polignac number, because 420595605289 - 2¹⁵ = 420595572521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420595605589) 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 in 3 ways as a sum of consecutive naturals, for example, 276343264 + ... + 276344785.

It is an arithmetic number, because the mean of its divisors is an integer number (105287073525).

Almost surely, 2^420595605289 is an apocalyptic number.

It is an amenable number.

420595605289 is a deficient number, since it is larger than the sum of its proper divisors (552688811).

420595605289 is an equidigital number, since it uses as much as digits as its factorization.

420595605289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552688810.

The product of its (nonzero) digits is 7776000, while the sum is 55.

The spelling of 420595605289 in words is "four hundred twenty billion, five hundred ninety-five million, six hundred five thousand, two hundred eighty-nine".