2020332421 has 4 divisors (see below), whose sum is σ = 2022142252. Its totient is φ = 2018522592.

The previous prime is 2020332409. The next prime is 2020332437. The reversal of 2020332421 is 1242330202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1242330202 = 2 ⋅621165101.

It can be written as a sum of positive squares in 2 ways, for example, as 643180321 + 1377152100 = 25361^2 + 37110^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020332421 - 2⁵ = 2020332389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020332401) 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 3 ways as a sum of consecutive naturals, for example, 903240 + ... + 905473.

It is an arithmetic number, because the mean of its divisors is an integer number (505535563).

Almost surely, 2^2020332421 is an apocalyptic number.

It is an amenable number.

2020332421 is a deficient number, since it is larger than the sum of its proper divisors (1809831).

2020332421 is a wasteful number, since it uses less digits than its factorization.

2020332421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809830.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 2020332421 is about 44948.1080914425. The cubic root of 2020332421 is about 1264.1762035793.

Adding to 2020332421 its reverse (1242330202), we get a palindrome (3262662623).

The spelling of 2020332421 in words is "two billion, twenty million, three hundred thirty-two thousand, four hundred twenty-one".