32640242 has 4 divisors (see below), whose sum is σ = 48960366. Its totient is φ = 16320120.

The previous prime is 32640239. The next prime is 32640247. The reversal of 32640242 is 24204623.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32137561 + 502681 = 5669^2 + 709^2 .

It is not an unprimeable number, because it can be changed into a prime (32640247) 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 as a sum of consecutive naturals, namely, 8160059 + ... + 8160062.

Almost surely, 2^32640242 is an apocalyptic number.

32640242 is a deficient number, since it is larger than the sum of its proper divisors (16320124).

32640242 is a wasteful number, since it uses less digits than its factorization.

32640242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16320123.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 32640242 is about 5713.1639220313. The cubic root of 32640242 is about 319.5835794348.

Adding to 32640242 its reverse (24204623), we get a palindrome (56844865).

The spelling of 32640242 in words is "thirty-two million, six hundred forty thousand, two hundred forty-two".