420020032 has 14 divisors (see below), whose sum is σ = 833477378. Its totient is φ = 210009984.

The previous prime is 420020009. The next prime is 420020039. The reversal of 420020032 is 230020024.

It can be written as a sum of positive squares in only one way, i.e., 261662976 + 158357056 = 16176^2 + 12584^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420019994 and 420020021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420020039) 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 as a sum of consecutive naturals, namely, 3281343 + ... + 3281470.

Almost surely, 2^420020032 is an apocalyptic number.

It is an amenable number.

420020032 is a deficient number, since it is larger than the sum of its proper divisors (413457346).

420020032 is an equidigital number, since it uses as much as digits as its factorization.

420020032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562825 (or 6562815 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 420020032 is about 20494.3902568483. The cubic root of 420020032 is about 748.8991446510.

Adding to 420020032 its reverse (230020024), we get a palindrome (650040056).

The spelling of 420020032 in words is "four hundred twenty million, twenty thousand, thirty-two".