420030273 has 16 divisors (see below), whose sum is σ = 609343616. Its totient is φ = 255813120.

The previous prime is 420030251. The next prime is 420030277. The reversal of 420030273 is 372030024.

It is a happy number.

It is not a de Polignac number, because 420030273 - 2¹² = 420026177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420030277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51733 + ... + 59298.

It is an arithmetic number, because the mean of its divisors is an integer number (38083976).

Almost surely, 2^420030273 is an apocalyptic number.

It is an amenable number.

420030273 is a deficient number, since it is larger than the sum of its proper divisors (189313343).

420030273 is a wasteful number, since it uses less digits than its factorization.

420030273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111144.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 420030273 is about 20494.6401041833. The cubic root of 420030273 is about 748.9052311970.

Adding to 420030273 its reverse (372030024), we get a palindrome (792060297).

The spelling of 420030273 in words is "four hundred twenty million, thirty thousand, two hundred seventy-three".