420244273 has 2 divisors, whose sum is σ = 420244274. Its totient is φ = 420244272.

The previous prime is 420244271. The next prime is 420244303. The reversal of 420244273 is 372442024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366837409 + 53406864 = 19153^2 + 7308^2 .

It is a cyclic number.

It is not a de Polignac number, because 420244273 - 2¹ = 420244271 is a prime.

Together with 420244271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (420244271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210122136 + 210122137.

It is an arithmetic number, because the mean of its divisors is an integer number (210122137).

Almost surely, 2^420244273 is an apocalyptic number.

It is an amenable number.

420244273 is a deficient number, since it is larger than the sum of its proper divisors (1).

420244273 is an equidigital number, since it uses as much as digits as its factorization.

420244273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 420244273 is about 20499.8603165973. The cubic root of 420244273 is about 749.0323954514.

Adding to 420244273 its reverse (372442024), we get a palindrome (792686297).

The spelling of 420244273 in words is "four hundred twenty million, two hundred forty-four thousand, two hundred seventy-three".