420442097 has 2 divisors, whose sum is σ = 420442098. Its totient is φ = 420442096.

The previous prime is 420442067. The next prime is 420442109. The reversal of 420442097 is 790244024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 365918641 + 54523456 = 19129^2 + 7384^2 .

It is a cyclic number.

It is not a de Polignac number, because 420442097 - 2¹² = 420438001 is a prime.

It is equal to p_22366706 and since 420442097 and 22366706 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (420442007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210221048 + 210221049.

It is an arithmetic number, because the mean of its divisors is an integer number (210221049).

Almost surely, 2^420442097 is an apocalyptic number.

It is an amenable number.

420442097 is a deficient number, since it is larger than the sum of its proper divisors (1).

420442097 is an equidigital number, since it uses as much as digits as its factorization.

420442097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 420442097 is about 20504.6847573914. The cubic root of 420442097 is about 749.1499091210.

The spelling of 420442097 in words is "four hundred twenty million, four hundred forty-two thousand, ninety-seven".