133842158 has 4 divisors (see below), whose sum is σ = 200763240. Its totient is φ = 66921078.

The previous prime is 133842109. The next prime is 133842169. The reversal of 133842158 is 851248331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 851248331 = 23 ⋅37010797.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33460538 + ... + 33460541.

It is an arithmetic number, because the mean of its divisors is an integer number (50190810).

Almost surely, 2^133842158 is an apocalyptic number.

133842158 is a deficient number, since it is larger than the sum of its proper divisors (66921082).

133842158 is an equidigital number, since it uses as much as digits as its factorization.

133842158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66921081.

The product of its digits is 23040, while the sum is 35.

The square root of 133842158 is about 11569.0171579093. The cubic root of 133842158 is about 511.5219919153.

The spelling of 133842158 in words is "one hundred thirty-three million, eight hundred forty-two thousand, one hundred fifty-eight".