32001424421 has 4 divisors (see below), whose sum is σ = 32439800172. Its totient is φ = 31563048672.

The previous prime is 32001424387. The next prime is 32001424447. The reversal of 32001424421 is 12442410023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12442410023 = 30259 ⋅411197.

It can be written as a sum of positive squares in 2 ways, for example, as 8819839396 + 23181585025 = 93914^2 + 152255^2 .

It is a cyclic number.

It is not a de Polignac number, because 32001424421 - 2¹⁰ = 32001423397 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 (32001424321) 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, 219187766 + ... + 219187911.

It is an arithmetic number, because the mean of its divisors is an integer number (8109950043).

Almost surely, 2^32001424421 is an apocalyptic number.

It is an amenable number.

32001424421 is a deficient number, since it is larger than the sum of its proper divisors (438375751).

32001424421 is an equidigital number, since it uses as much as digits as its factorization.

32001424421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438375750.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 32001424421 its reverse (12442410023), we get a palindrome (44443834444).

The spelling of 32001424421 in words is "thirty-two billion, one million, four hundred twenty-four thousand, four hundred twenty-one".