420030440 has 32 divisors (see below), whose sum is σ = 961092000. Its totient is φ = 165163584.

The previous prime is 420030419. The next prime is 420030463. The reversal of 420030440 is 44030024.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 86630 + ... + 91349.

It is an arithmetic number, because the mean of its divisors is an integer number (30034125).

Almost surely, 2^420030440 is an apocalyptic number.

420030440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420030440 is an abundant number, since it is smaller than the sum of its proper divisors (541061560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420030440 is a wasteful number, since it uses less digits than its factorization.

420030440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178049 (or 178045 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 420030440 is about 20494.6441784189. The cubic root of 420030440 is about 748.9053304495.

Adding to 420030440 its reverse (44030024), we get a palindrome (464060464).

The spelling of 420030440 in words is "four hundred twenty million, thirty thousand, four hundred forty".