421030061 has 2 divisors, whose sum is σ = 421030062. Its totient is φ = 421030060.

The previous prime is 421030009. The next prime is 421030097. The reversal of 421030061 is 160030124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 420865225 + 164836 = 20515^2 + 406^2 .

It is a cyclic number.

It is not a de Polignac number, because 421030061 - 2⁶ = 421029997 is a prime.

It is a super-3 number, since 3×421030061³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421030261) 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, 210515030 + 210515031.

It is an arithmetic number, because the mean of its divisors is an integer number (210515031).

Almost surely, 2^421030061 is an apocalyptic number.

It is an amenable number.

421030061 is a deficient number, since it is larger than the sum of its proper divisors (1).

421030061 is an equidigital number, since it uses as much as digits as its factorization.

421030061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 421030061 is about 20519.0170573544. The cubic root of 421030061 is about 749.4989607615.

Adding to 421030061 its reverse (160030124), we get a palindrome (581060185).

The spelling of 421030061 in words is "four hundred twenty-one million, thirty thousand, sixty-one".