420004432 has 20 divisors (see below), whose sum is σ = 814424436. Its totient is φ = 209830400.

The previous prime is 420004411. The next prime is 420004433. The reversal of 420004432 is 234400024.

It can be written as a sum of positive squares in 2 ways, for example, as 100881936 + 319122496 = 10044^2 + 17864^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420004433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10728 + ... + 30904.

Almost surely, 2^420004432 is an apocalyptic number.

It is an amenable number.

420004432 is a deficient number, since it is larger than the sum of its proper divisors (394420004).

420004432 is a wasteful number, since it uses less digits than its factorization.

420004432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21486 (or 21480 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 420004432 is about 20494.0096613620. The cubic root of 420004432 is about 748.8898728937.

Adding to 420004432 its reverse (234400024), we get a palindrome (654404456).

The spelling of 420004432 in words is "four hundred twenty million, four thousand, four hundred thirty-two".