33213042 has 24 divisors (see below), whose sum is σ = 72678060. Its totient is φ = 10960800.

The previous prime is 33213017. The next prime is 33213049. The reversal of 33213042 is 24031233.

It can be written as a sum of positive squares in 2 ways, for example, as 27973521 + 5239521 = 5289^2 + 2289^2 .

It is a super-2 number, since 2×33213042² = 2206212317787528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (33213049) 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, 7317 + ... + 10952.

Almost surely, 2^33213042 is an apocalyptic number.

33213042 is an abundant number, since it is smaller than the sum of its proper divisors (39465018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33213042 is a wasteful number, since it uses less digits than its factorization.

33213042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18378 (or 18375 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 33213042 is about 5763.0757413034. The cubic root of 33213042 is about 321.4421948935.

Adding to 33213042 its reverse (24031233), we get a palindrome (57244275).

The spelling of 33213042 in words is "thirty-three million, two hundred thirteen thousand, forty-two".