33243442 has 4 divisors (see below), whose sum is σ = 49865166. Its totient is φ = 16621720.

The previous prime is 33243421. The next prime is 33243451. The reversal of 33243442 is 24434233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24434233 = 4519 ⋅5407.

It can be written as a sum of positive squares in only one way, i.e., 19263321 + 13980121 = 4389^2 + 3739^2 .

It is a super-2 number, since 2×33243442² = 2210252872014728, which contains 22 as substring.

It is an unprimeable number.

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, 8310859 + ... + 8310862.

Almost surely, 2^33243442 is an apocalyptic number.

33243442 is a deficient number, since it is larger than the sum of its proper divisors (16621724).

33243442 is a wasteful number, since it uses less digits than its factorization.

33243442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16621723.

The product of its digits is 6912, while the sum is 25.

The square root of 33243442 is about 5765.7126185754. The cubic root of 33243442 is about 321.5402373315.

Adding to 33243442 its reverse (24434233), we get a palindrome (57677675).

The spelling of 33243442 in words is "thirty-three million, two hundred forty-three thousand, four hundred forty-two".