33031242 has 24 divisors (see below), whose sum is σ = 72280260. Its totient is φ = 10900800.

The previous prime is 33031241. The next prime is 33031247. The reversal of 33031242 is 24213033.

It can be written as a sum of positive squares in 2 ways, for example, as 32729841 + 301401 = 5721^2 + 549^2 .

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 (33031241) 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, 7267 + ... + 10902.

Almost surely, 2^33031242 is an apocalyptic number.

33031242 is an abundant number, since it is smaller than the sum of its proper divisors (39249018).

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

33031242 is a wasteful number, since it uses less digits than its factorization.

33031242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18278 (or 18275 counting only the distinct ones).

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

The square root of 33031242 is about 5747.2812703051. The cubic root of 33031242 is about 320.8546230808.

Adding to 33031242 its reverse (24213033), we get a palindrome (57244275).

The spelling of 33031242 in words is "thirty-three million, thirty-one thousand, two hundred forty-two".