420097 has 2 divisors, whose sum is σ = 420098. Its totient is φ = 420096.

The previous prime is 420073. The next prime is 420103. The reversal of 420097 is 790024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410881 + 9216 = 641^2 + 96^2 .

It is a cyclic number.

It is not a de Polignac number, because 420097 - 2¹⁵ = 387329 is a prime.

It is not a weakly prime, because it can be changed into another prime (420037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210048 + 210049.

It is an arithmetic number, because the mean of its divisors is an integer number (210049).

2⁴²⁰⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

420097 is a deficient number, since it is larger than the sum of its proper divisors (1).

420097 is an equidigital number, since it uses as much as digits as its factorization.

420097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 420097 is about 648.1489026451. The cubic root of 420097 is about 74.8944886714.

Adding to 420097 its reverse (790024), we get a palindrome (1210121).

The spelling of 420097 in words is "four hundred twenty thousand, ninety-seven".