33143442 has 16 divisors (see below), whose sum is σ = 66695520. Its totient is φ = 10979712.

The previous prime is 33143441. The next prime is 33143449. The reversal of 33143442 is 24434133.

It is not an unprimeable number, because it can be changed into a prime (33143441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15967 + ... + 17922.

It is an arithmetic number, because the mean of its divisors is an integer number (4168470).

Almost surely, 2^33143442 is an apocalyptic number.

33143442 is an abundant number, since it is smaller than the sum of its proper divisors (33552078).

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

33143442 is a wasteful number, since it uses less digits than its factorization.

33143442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34057.

The product of its digits is 3456, while the sum is 24.

The square root of 33143442 is about 5757.0341322594. The cubic root of 33143442 is about 321.2175038163.

Adding to 33143442 its reverse (24434133), we get a palindrome (57577575).

The spelling of 33143442 in words is "thirty-three million, one hundred forty-three thousand, four hundred forty-two".