33521042 has 16 divisors (see below), whose sum is σ = 55076760. Its totient is φ = 15230208.

The previous prime is 33521039. The next prime is 33521057. The reversal of 33521042 is 24012533.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32478601 + 1042441 = 5699^2 + 1021^2 .

It is a super-2 number, since 2×33521042² = 2247320513531528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16013 + ... + 17984.

Almost surely, 2^33521042 is an apocalyptic number.

33521042 is a deficient number, since it is larger than the sum of its proper divisors (21555718).

33521042 is a wasteful number, since it uses less digits than its factorization.

33521042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34045.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 33521042 is about 5789.7359179845. The cubic root of 33521042 is about 322.4327668671.

Adding to 33521042 its reverse (24012533), we get a palindrome (57533575).

The spelling of 33521042 in words is "thirty-three million, five hundred twenty-one thousand, forty-two".