32540421 has 12 divisors (see below), whose sum is σ = 44835936. Its totient is φ = 20991960.

The previous prime is 32540413. The next prime is 32540461. The reversal of 32540421 is 12404523.

It is not a de Polignac number, because 32540421 - 2³ = 32540413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32540461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2761 + ... + 8526.

It is an arithmetic number, because the mean of its divisors is an integer number (3736328).

Almost surely, 2^32540421 is an apocalyptic number.

32540421 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

32540421 is a deficient number, since it is larger than the sum of its proper divisors (12295515).

32540421 is a wasteful number, since it uses less digits than its factorization.

32540421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11352 (or 11321 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 32540421 is about 5704.4211801023. The cubic root of 32540421 is about 319.2574612636.

Adding to 32540421 its reverse (12404523), we get a palindrome (44944944).

The spelling of 32540421 in words is "thirty-two million, five hundred forty thousand, four hundred twenty-one".