420040432 has 20 divisors (see below), whose sum is σ = 930089776. Its totient is φ = 180017280.

The previous prime is 420040417. The next prime is 420040433. The reversal of 420040432 is 234040024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420040433) 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 in 3 ways as a sum of consecutive naturals, for example, 1875069 + ... + 1875292.

Almost surely, 2^420040432 is an apocalyptic number.

It is an amenable number.

420040432 is an abundant number, since it is smaller than the sum of its proper divisors (510049344).

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

420040432 is a wasteful number, since it uses less digits than its factorization.

420040432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750376 (or 3750370 counting only the distinct ones).

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

The square root of 420040432 is about 20494.8879479738. The cubic root of 420040432 is about 748.9112689102.

Adding to 420040432 its reverse (234040024), we get a palindrome (654080456).

The spelling of 420040432 in words is "four hundred twenty million, forty thousand, four hundred thirty-two".