33021342 has 24 divisors (see below), whose sum is σ = 71867640. Its totient is φ = 10957680.

The previous prime is 33021341. The next prime is 33021347. The reversal of 33021342 is 24312033.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33021341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117 + ... + 8127.

It is an arithmetic number, because the mean of its divisors is an integer number (2994485).

Almost surely, 2^33021342 is an apocalyptic number.

33021342 is an abundant number, since it is smaller than the sum of its proper divisors (38846298).

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

33021342 is a wasteful number, since it uses less digits than its factorization.

33021342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8248 (or 8245 counting only the distinct ones).

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

The square root of 33021342 is about 5746.4199289645. The cubic root of 33021342 is about 320.8225647629.

Adding to 33021342 its reverse (24312033), we get a palindrome (57333375).

The spelling of 33021342 in words is "thirty-three million, twenty-one thousand, three hundred forty-two".