420322673 has 2 divisors, whose sum is σ = 420322674. Its totient is φ = 420322672.

The previous prime is 420322633. The next prime is 420322697. The reversal of 420322673 is 376223024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383258929 + 37063744 = 19577^2 + 6088^2 .

It is a cyclic number.

It is not a de Polignac number, because 420322673 - 2⁸ = 420322417 is a prime.

It is a super-2 number, since 2×420322673² = 353342298875729858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (420322633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210161336 + 210161337.

It is an arithmetic number, because the mean of its divisors is an integer number (210161337).

Almost surely, 2^420322673 is an apocalyptic number.

It is an amenable number.

420322673 is a deficient number, since it is larger than the sum of its proper divisors (1).

420322673 is an equidigital number, since it uses as much as digits as its factorization.

420322673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 420322673 is about 20501.7724355725. The cubic root of 420322673 is about 749.0789719246.

Adding to 420322673 its reverse (376223024), we get a palindrome (796545697).

The spelling of 420322673 in words is "four hundred twenty million, three hundred twenty-two thousand, six hundred seventy-three".