420030133 has 2 divisors, whose sum is σ = 420030134. Its totient is φ = 420030132.

The previous prime is 420030119. The next prime is 420030139. The reversal of 420030133 is 331030024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 408727089 + 11303044 = 20217^2 + 3362^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420030133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420030139) 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, 210015066 + 210015067.

It is an arithmetic number, because the mean of its divisors is an integer number (210015067).

Almost surely, 2^420030133 is an apocalyptic number.

It is an amenable number.

420030133 is a deficient number, since it is larger than the sum of its proper divisors (1).

420030133 is an equidigital number, since it uses as much as digits as its factorization.

420030133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 420030133 is about 20494.6366886559. The cubic root of 420030133 is about 748.9051479913.

Adding to 420030133 its reverse (331030024), we get a palindrome (751060157).

The spelling of 420030133 in words is "four hundred twenty million, thirty thousand, one hundred thirty-three".