33130142 has 4 divisors (see below), whose sum is σ = 49695216. Its totient is φ = 16565070.

The previous prime is 33130099. The next prime is 33130157. The reversal of 33130142 is 24103133.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 33130142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8282534 + ... + 8282537.

It is an arithmetic number, because the mean of its divisors is an integer number (12423804).

Almost surely, 2^33130142 is an apocalyptic number.

33130142 is a deficient number, since it is larger than the sum of its proper divisors (16565074).

33130142 is a wasteful number, since it uses less digits than its factorization.

33130142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16565073.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 33130142 is about 5755.8789076908. The cubic root of 33130142 is about 321.1745313695.

Adding to 33130142 its reverse (24103133), we get a palindrome (57233275).

The spelling of 33130142 in words is "thirty-three million, one hundred thirty thousand, one hundred forty-two".