133144142 has 16 divisors (see below), whose sum is σ = 203471232. Its totient is φ = 65328120.

The previous prime is 133144129. The next prime is 133144147. The reversal of 133144142 is 241441331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133144147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36167 + ... + 39677.

It is an arithmetic number, because the mean of its divisors is an integer number (12716952).

Almost surely, 2^133144142 is an apocalyptic number.

133144142 is a deficient number, since it is larger than the sum of its proper divisors (70327090).

133144142 is a wasteful number, since it uses less digits than its factorization.

133144142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3863.

The product of its digits is 1152, while the sum is 23.

The square root of 133144142 is about 11538.8102506281. The cubic root of 133144142 is about 510.6312087135.

Adding to 133144142 its reverse (241441331), we get a palindrome (374585473).

The spelling of 133144142 in words is "one hundred thirty-three million, one hundred forty-four thousand, one hundred forty-two".