420606273 has 4 divisors (see below), whose sum is σ = 560808368. Its totient is φ = 280404180.

The previous prime is 420606253. The next prime is 420606281. The reversal of 420606273 is 372606024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 420606273 - 2⁶ = 420606209 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 420606273.

It is not an unprimeable number, because it can be changed into a prime (420606223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70101043 + ... + 70101048.

It is an arithmetic number, because the mean of its divisors is an integer number (140202092).

Almost surely, 2^420606273 is an apocalyptic number.

It is an amenable number.

420606273 is a deficient number, since it is larger than the sum of its proper divisors (140202095).

420606273 is a wasteful number, since it uses less digits than its factorization.

420606273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140202094.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 420606273 is about 20508.6877444658. The cubic root of 420606273 is about 749.2474068351.

The spelling of 420606273 in words is "four hundred twenty million, six hundred six thousand, two hundred seventy-three".