8420210273 has 4 divisors (see below), whose sum is σ = 8444337300. Its totient is φ = 8396083248.

The previous prime is 8420210269. The next prime is 8420210321. The reversal of 8420210273 is 3720120248.

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 3793081744 + 4627128529 = 61588^2 + 68023^2 .

It is a cyclic number.

It is not a de Polignac number, because 8420210273 - 2² = 8420210269 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8420210243) 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, 12062990 + ... + 12063687.

It is an arithmetic number, because the mean of its divisors is an integer number (2111084325).

Almost surely, 2^8420210273 is an apocalyptic number.

It is an amenable number.

8420210273 is a deficient number, since it is larger than the sum of its proper divisors (24127027).

8420210273 is a wasteful number, since it uses less digits than its factorization.

8420210273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24127026.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 8420210273 is about 91761.7037385423. The cubic root of 8420210273 is about 2034.4216974023.

The spelling of 8420210273 in words is "eight billion, four hundred twenty million, two hundred ten thousand, two hundred seventy-three".