33142142 has 12 divisors (see below), whose sum is σ = 54643848. Its totient is φ = 15064500.

The previous prime is 33142141. The next prime is 33142147. The reversal of 33142142 is 24124133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33142141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 68234 + ... + 68717.

It is an arithmetic number, because the mean of its divisors is an integer number (4553654).

Almost surely, 2^33142142 is an apocalyptic number.

33142142 is a deficient number, since it is larger than the sum of its proper divisors (21501706).

33142142 is a wasteful number, since it uses less digits than its factorization.

33142142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136975 (or 136964 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 33142142 is about 5756.9212257942. The cubic root of 33142142 is about 321.2133040089.

Adding to 33142142 its reverse (24124133), we get a palindrome (57266275).

Subtracting from 33142142 its reverse (24124133), we obtain a square (9018009 = 3003²).

The spelling of 33142142 in words is "thirty-three million, one hundred forty-two thousand, one hundred forty-two".