33155142 has 16 divisors (see below), whose sum is σ = 67928112. Its totient is φ = 10782080.

The previous prime is 33155141. The next prime is 33155159. The reversal of 33155142 is 24155133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33155141) 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, 67143 + ... + 67634.

It is an arithmetic number, because the mean of its divisors is an integer number (4245507).

Almost surely, 2^33155142 is an apocalyptic number.

33155142 is an abundant number, since it is smaller than the sum of its proper divisors (34772970).

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

33155142 is a wasteful number, since it uses less digits than its factorization.

33155142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134823.

The product of its digits is 1800, while the sum is 24.

The square root of 33155142 is about 5758.0501908198. The cubic root of 33155142 is about 321.2552971415.

Subtracting from 33155142 its reverse (24155133), we obtain a palindrome (9000009).

The spelling of 33155142 in words is "thirty-three million, one hundred fifty-five thousand, one hundred forty-two".