32042421 has 6 divisors (see below), whose sum is σ = 46283510. Its totient is φ = 21361608.

The previous prime is 32042411. The next prime is 32042429. The reversal of 32042421 is 12424023.

It can be written as a sum of positive squares in only one way, i.e., 27941796 + 4100625 = 5286^2 + 2025^2 .

It is not a de Polignac number, because 32042421 - 2⁶ = 32042357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32042394 and 32042403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32042429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1780126 + ... + 1780143.

Almost surely, 2^32042421 is an apocalyptic number.

It is an amenable number.

32042421 is a deficient number, since it is larger than the sum of its proper divisors (14241089).

32042421 is a wasteful number, since it uses less digits than its factorization.

32042421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3560275 (or 3560272 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 32042421 is about 5660.6025297666. The cubic root of 32042421 is about 317.6204383223.

Adding to 32042421 its reverse (12424023), we get a palindrome (44466444).

It can be divided in two parts, 3204 and 2421, that added together give a square (5625 = 75²).

The spelling of 32042421 in words is "thirty-two million, forty-two thousand, four hundred twenty-one".