33143142 has 8 divisors (see below), whose sum is σ = 66286296. Its totient is φ = 11047712.

The previous prime is 33143059. The next prime is 33143147. The reversal of 33143142 is 24134133.

It is a sphenic number, since it is the product of 3 distinct primes.

33143142 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33143147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2761923 + ... + 2761934.

It is an arithmetic number, because the mean of its divisors is an integer number (8285787).

Almost surely, 2^33143142 is an apocalyptic number.

33143142 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

33143142 is a wasteful number, since it uses less digits than its factorization.

33143142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5523862.

The product of its digits is 864, while the sum is 21.

The square root of 33143142 is about 5757.0080771178. The cubic root of 33143142 is about 321.2165346397.

Adding to 33143142 its reverse (24134133), we get a palindrome (57277275).

Subtracting from 33143142 its reverse (24134133), we obtain a palindrome (9009009).

The spelling of 33143142 in words is "thirty-three million, one hundred forty-three thousand, one hundred forty-two".