32140145 has 4 divisors (see below), whose sum is σ = 38568180. Its totient is φ = 25712112.

The previous prime is 32140139. The next prime is 32140159. The reversal of 32140145 is 54104123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54104123 = 401 ⋅134923.

It can be written as a sum of positive squares in 2 ways, for example, as 23001616 + 9138529 = 4796^2 + 3023^2 .

It is a cyclic number.

It is not a de Polignac number, because 32140145 - 2²⁰ = 31091569 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3214010 + ... + 3214019.

It is an arithmetic number, because the mean of its divisors is an integer number (9642045).

Almost surely, 2^32140145 is an apocalyptic number.

It is an amenable number.

32140145 is a deficient number, since it is larger than the sum of its proper divisors (6428035).

32140145 is an equidigital number, since it uses as much as digits as its factorization.

32140145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6428034.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 32140145 is about 5669.2279015753. The cubic root of 32140145 is about 317.9430069400.

Adding to 32140145 its reverse (54104123), we get a palindrome (86244268).

The spelling of 32140145 in words is "thirty-two million, one hundred forty thousand, one hundred forty-five".