33042445 has 4 divisors (see below), whose sum is σ = 39650940. Its totient is φ = 26433952.

The previous prime is 33042437. The next prime is 33042469. The reversal of 33042445 is 54424033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54424033 = 67 ⋅812299.

It can be written as a sum of positive squares in 2 ways, for example, as 15225604 + 17816841 = 3902^2 + 4221^2 .

It is a cyclic number.

It is not a de Polignac number, because 33042445 - 2³ = 33042437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3304240 + ... + 3304249.

It is an arithmetic number, because the mean of its divisors is an integer number (9912735).

Almost surely, 2^33042445 is an apocalyptic number.

It is an amenable number.

33042445 is a deficient number, since it is larger than the sum of its proper divisors (6608495).

33042445 is an equidigital number, since it uses as much as digits as its factorization.

33042445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6608494.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 33042445 is about 5748.2558224213. The cubic root of 33042445 is about 320.8908930666.

Adding to 33042445 its reverse (54424033), we get a palindrome (87466478).

The spelling of 33042445 in words is "thirty-three million, forty-two thousand, four hundred forty-five".