33042121 has 12 divisors (see below), whose sum is σ = 40460880. Its totient is φ = 26830440.

The previous prime is 33042109. The next prime is 33042131. The reversal of 33042121 is 12124033.

It is a happy number.

It is not a de Polignac number, because 33042121 - 2⁵ = 33042089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 33042095 and 33042104.

It is not an unprimeable number, because it can be changed into a prime (33042131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16815 + ... + 18676.

It is an arithmetic number, because the mean of its divisors is an integer number (3371740).

Almost surely, 2^33042121 is an apocalyptic number.

It is an amenable number.

33042121 is a deficient number, since it is larger than the sum of its proper divisors (7418759).

33042121 is a wasteful number, since it uses less digits than its factorization.

33042121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35524 (or 35517 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 33042121 is about 5748.2276398904. The cubic root of 33042121 is about 320.8898442239.

Adding to 33042121 its reverse (12124033), we get a palindrome (45166154).

The spelling of 33042121 in words is "thirty-three million, forty-two thousand, one hundred twenty-one".