420030134 has 4 divisors (see below), whose sum is σ = 630045204. Its totient is φ = 210015066.

The previous prime is 420030133. The next prime is 420030139. The reversal of 420030134 is 431030024.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420030133) 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, 105007532 + ... + 105007535.

It is an arithmetic number, because the mean of its divisors is an integer number (157511301).

Almost surely, 2^420030134 is an apocalyptic number.

420030134 is a deficient number, since it is larger than the sum of its proper divisors (210015070).

420030134 is a wasteful number, since it uses less digits than its factorization.

420030134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210015069.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 420030134 is about 20494.6367130525. The cubic root of 420030134 is about 748.9051485856.

Adding to 420030134 its reverse (431030024), we get a palindrome (851060158).

The spelling of 420030134 in words is "four hundred twenty million, thirty thousand, one hundred thirty-four".