33042641 has 2 divisors, whose sum is σ = 33042642. Its totient is φ = 33042640.

The previous prime is 33042593. The next prime is 33042643. The reversal of 33042641 is 14624033.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32547025 + 495616 = 5705^2 + 704^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33042641 is a prime.

It is a super-2 number, since 2×33042641² = 2183632248509762, which contains 22 as substring.

Together with 33042643, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33042643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16521320 + 16521321.

It is an arithmetic number, because the mean of its divisors is an integer number (16521321).

Almost surely, 2^33042641 is an apocalyptic number.

It is an amenable number.

33042641 is a deficient number, since it is larger than the sum of its proper divisors (1).

33042641 is an equidigital number, since it uses as much as digits as its factorization.

33042641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 33042641 is about 5748.2728710457. The cubic root of 33042641 is about 320.8915275484.

Adding to 33042641 its reverse (14624033), we get a palindrome (47666674).

The spelling of 33042641 in words is "thirty-three million, forty-two thousand, six hundred forty-one".