33147142 has 8 divisors (see below), whose sum is σ = 56823696. Its totient is φ = 14205912.

The previous prime is 33147139. The next prime is 33147143. The reversal of 33147142 is 24174133.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33147143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183813 + ... + 1183840.

It is an arithmetic number, because the mean of its divisors is an integer number (7102962).

Almost surely, 2^33147142 is an apocalyptic number.

33147142 is a deficient number, since it is larger than the sum of its proper divisors (23676554).

33147142 is a wasteful number, since it uses less digits than its factorization.

33147142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2367662.

The product of its digits is 2016, while the sum is 25.

The square root of 33147142 is about 5757.3554693105. The cubic root of 33147142 is about 321.2294565131.

The spelling of 33147142 in words is "thirty-three million, one hundred forty-seven thousand, one hundred forty-two".