32644042 has 4 divisors (see below), whose sum is σ = 48966066. Its totient is φ = 16322020.

The previous prime is 32644039. The next prime is 32644069. The reversal of 32644042 is 24044623.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24044623 = 31 ⋅775633.

It can be written as a sum of positive squares in only one way, i.e., 24910081 + 7733961 = 4991^2 + 2781^2 .

It is a junction number, because it is equal to n+sod(n) for n = 32643998 and 32644016.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8161009 + ... + 8161012.

Almost surely, 2^32644042 is an apocalyptic number.

32644042 is a deficient number, since it is larger than the sum of its proper divisors (16322024).

32644042 is a wasteful number, since it uses less digits than its factorization.

32644042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16322023.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 32644042 is about 5713.4964776396. The cubic root of 32644042 is about 319.5959810021.

Adding to 32644042 its reverse (24044623), we get a palindrome (56688665).

The spelling of 32644042 in words is "thirty-two million, six hundred forty-four thousand, forty-two".