133133142 has 32 divisors (see below), whose sum is σ = 278575200. Its totient is φ = 42361088.

The previous prime is 133133123. The next prime is 133133153. The reversal of 133133142 is 241331331.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 11188 + ... + 19784.

It is an arithmetic number, because the mean of its divisors is an integer number (8705475).

Almost surely, 2^133133142 is an apocalyptic number.

133133142 is an abundant number, since it is smaller than the sum of its proper divisors (145442058).

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

133133142 is a wasteful number, since it uses less digits than its factorization.

133133142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8720.

The product of its digits is 648, while the sum is 21.

The square root of 133133142 is about 11538.3335885214. Note that the first 3 decimals coincide. The cubic root of 133133142 is about 510.6171460144.

Adding to 133133142 its reverse (241331331), we get a palindrome (374464473).

The spelling of 133133142 in words is "one hundred thirty-three million, one hundred thirty-three thousand, one hundred forty-two".