32020421 has 4 divisors (see below), whose sum is σ = 32563200. Its totient is φ = 31477644.

The previous prime is 32020409. The next prime is 32020433. The reversal of 32020421 is 12402023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (32020409) and next prime (32020433).

It is a cyclic number.

It is not a de Polignac number, because 32020421 - 2⁶ = 32020357 is a prime.

It is a super-2 number, since 2×32020421² = 2050614722034482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32020396 and 32020405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32020441) 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, 271301 + ... + 271418.

It is an arithmetic number, because the mean of its divisors is an integer number (8140800).

Almost surely, 2^32020421 is an apocalyptic number.

It is an amenable number.

32020421 is a deficient number, since it is larger than the sum of its proper divisors (542779).

32020421 is an equidigital number, since it uses as much as digits as its factorization.

32020421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542778.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 32020421 is about 5658.6589400670. The cubic root of 32020421 is about 317.5477300265.

Adding to 32020421 its reverse (12402023), we get a palindrome (44422444).

The spelling of 32020421 in words is "thirty-two million, twenty thousand, four hundred twenty-one".