33042109 has 2 divisors, whose sum is σ = 33042110. Its totient is φ = 33042108.

The previous prime is 33042089. The next prime is 33042131. The reversal of 33042109 is 90124033.

It is an a-pointer prime, because the next prime (33042131) can be obtained adding 33042109 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31472100 + 1570009 = 5610^2 + 1253^2 .

It is an emirp because it is prime and its reverse (90124033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33042109 - 2⁹ = 33041597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33042109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33042199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16521054 + 16521055.

It is an arithmetic number, because the mean of its divisors is an integer number (16521055).

Almost surely, 2^33042109 is an apocalyptic number.

It is an amenable number.

33042109 is a deficient number, since it is larger than the sum of its proper divisors (1).

33042109 is an equidigital number, since it uses as much as digits as its factorization.

33042109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 33042109 is about 5748.2265960903. The cubic root of 33042109 is about 320.8898053777.

The spelling of 33042109 in words is "thirty-three million, forty-two thousand, one hundred nine".