33145442 has 8 divisors (see below), whose sum is σ = 54238032. Its totient is φ = 15066100.

The previous prime is 33145429. The next prime is 33145471. The reversal of 33145442 is 24454133.

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 753284 + ... + 753327.

It is an arithmetic number, because the mean of its divisors is an integer number (6779754).

Almost surely, 2^33145442 is an apocalyptic number.

33145442 is a deficient number, since it is larger than the sum of its proper divisors (21092590).

33145442 is a wasteful number, since it uses less digits than its factorization.

33145442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506624.

The product of its digits is 5760, while the sum is 26.

The square root of 33145442 is about 5757.2078301899. The cubic root of 33145442 is about 321.2239648439.

Adding to 33145442 its reverse (24454133), we get a palindrome (57599575).

The spelling of 33145442 in words is "thirty-three million, one hundred forty-five thousand, four hundred forty-two".