142986199 has 4 divisors (see below), whose sum is σ = 143776360. Its totient is φ = 142196040.

The previous prime is 142986187. The next prime is 142986227. The reversal of 142986199 is 991689241.

It is a happy number.

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 142986199 - 2²⁷ = 8768471 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 (142986139) 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, 394809 + ... + 395170.

It is an arithmetic number, because the mean of its divisors is an integer number (35944090).

Almost surely, 2^142986199 is an apocalyptic number.

142986199 is a deficient number, since it is larger than the sum of its proper divisors (790161).

142986199 is an equidigital number, since it uses as much as digits as its factorization.

142986199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790160.

The product of its digits is 279936, while the sum is 49.

The square root of 142986199 is about 11957.6836803789. The cubic root of 142986199 is about 522.9153298217.

The spelling of 142986199 in words is "one hundred forty-two million, nine hundred eighty-six thousand, one hundred ninety-nine".