420743273 has 2 divisors, whose sum is σ = 420743274. Its totient is φ = 420743272.

The previous prime is 420743269. The next prime is 420743329. The reversal of 420743273 is 372347024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244703449 + 176039824 = 15643^2 + 13268^2 .

It is a cyclic number.

It is not a de Polignac number, because 420743273 - 2² = 420743269 is a prime.

It is not a weakly prime, because it can be changed into another prime (420743173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210371636 + 210371637.

It is an arithmetic number, because the mean of its divisors is an integer number (210371637).

Almost surely, 2^420743273 is an apocalyptic number.

It is an amenable number.

420743273 is a deficient number, since it is larger than the sum of its proper divisors (1).

420743273 is an equidigital number, since it uses as much as digits as its factorization.

420743273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 32.

The square root of 420743273 is about 20512.0275204574. The cubic root of 420743273 is about 749.3287463669.

The spelling of 420743273 in words is "four hundred twenty million, seven hundred forty-three thousand, two hundred seventy-three".