420030344 has 8 divisors (see below), whose sum is σ = 787556910. Its totient is φ = 210015168.

The previous prime is 420030337. The next prime is 420030349. The reversal of 420030344 is 443030024.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 379860100 + 40170244 = 19490^2 + 6338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (420030349) 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 as a sum of consecutive naturals, namely, 26251889 + ... + 26251904.

Almost surely, 2^420030344 is an apocalyptic number.

It is an amenable number.

420030344 is a deficient number, since it is larger than the sum of its proper divisors (367526566).

420030344 is a wasteful number, since it uses less digits than its factorization.

420030344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52503799 (or 52503795 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 420030344 is about 20494.6418363435. The cubic root of 420030344 is about 748.9052733942.

Adding to 420030344 its reverse (443030024), we get a palindrome (863060368).

The spelling of 420030344 in words is "four hundred twenty million, thirty thousand, three hundred forty-four".