133855142 has 8 divisors (see below), whose sum is σ = 200982432. Its totient is φ = 66861000.

The previous prime is 133855123. The next prime is 133855223. The reversal of 133855142 is 241558331.

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

It is a junction number, because it is equal to n+sod(n) for n = 133855099 and 133855108.

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 3 ways as a sum of consecutive naturals, for example, 30734 + ... + 34817.

It is an arithmetic number, because the mean of its divisors is an integer number (25122804).

Almost surely, 2^133855142 is an apocalyptic number.

133855142 is a deficient number, since it is larger than the sum of its proper divisors (67127290).

133855142 is a wasteful number, since it uses less digits than its factorization.

133855142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66574.

The product of its digits is 14400, while the sum is 32.

The square root of 133855142 is about 11569.5782982786. The cubic root of 133855142 is about 511.5385322612.

The spelling of 133855142 in words is "one hundred thirty-three million, eight hundred fifty-five thousand, one hundred forty-two".