32420161 has 4 divisors (see below), whose sum is σ = 32904112. Its totient is φ = 31936212.

The previous prime is 32420159. The next prime is 32420183. The reversal of 32420161 is 16102423.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16102423 = 31 ⋅519433.

It is a cyclic number.

It is not a de Polignac number, because 32420161 - 2¹ = 32420159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32420191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 241875 + ... + 242008.

It is an arithmetic number, because the mean of its divisors is an integer number (8226028).

Almost surely, 2^32420161 is an apocalyptic number.

It is an amenable number.

32420161 is a deficient number, since it is larger than the sum of its proper divisors (483951).

32420161 is an equidigital number, since it uses as much as digits as its factorization.

32420161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483950.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 32420161 is about 5693.8704762227. The cubic root of 32420161 is about 318.8636813016.

Adding to 32420161 its reverse (16102423), we get a palindrome (48522584).

The spelling of 32420161 in words is "thirty-two million, four hundred twenty thousand, one hundred sixty-one".