32002020421 has 32 divisors (see below), whose sum is σ = 37278517248. Its totient is φ = 26908244160.

The previous prime is 32002020389. The next prime is 32002020461. The reversal of 32002020421 is 12402020023.

It is not a de Polignac number, because 32002020421 - 2⁵ = 32002020389 is a prime.

It is a super-2 number, since 2×32002020421² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 32002020395 and 32002020404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32002020461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63622056 + ... + 63622558.

It is an arithmetic number, because the mean of its divisors is an integer number (1164953664).

Almost surely, 2^32002020421 is an apocalyptic number.

It is an amenable number.

32002020421 is a deficient number, since it is larger than the sum of its proper divisors (5276496827).

32002020421 is a wasteful number, since it uses less digits than its factorization.

32002020421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 32002020421 its reverse (12402020023), we get a palindrome (44404040444).

The spelling of 32002020421 in words is "thirty-two billion, two million, twenty thousand, four hundred twenty-one".