133942199 has 4 divisors (see below), whose sum is σ = 133975536. Its totient is φ = 133908864.

The previous prime is 133942189. The next prime is 133942217. The reversal of 133942199 is 991249331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 133942199 - 2¹⁶ = 133876663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133942189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9659 + ... + 19004.

It is an arithmetic number, because the mean of its divisors is an integer number (33493884).

Almost surely, 2^133942199 is an apocalyptic number.

133942199 is a deficient number, since it is larger than the sum of its proper divisors (33337).

133942199 is an equidigital number, since it uses as much as digits as its factorization.

133942199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33336.

The product of its digits is 52488, while the sum is 41.

The square root of 133942199 is about 11573.3400105587. The cubic root of 133942199 is about 511.6494067442.

The spelling of 133942199 in words is "one hundred thirty-three million, nine hundred forty-two thousand, one hundred ninety-nine".