199412143 has 4 divisors (see below), whose sum is σ = 227899600. Its totient is φ = 170924688.

The previous prime is 199412099. The next prime is 199412177. The reversal of 199412143 is 341214991.

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 199412143 - 2²¹ = 197314991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199412099 and 199412108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199412183) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 14243718 + ... + 14243731.

It is an arithmetic number, because the mean of its divisors is an integer number (56974900).

Almost surely, 2^199412143 is an apocalyptic number.

199412143 is a deficient number, since it is larger than the sum of its proper divisors (28487457).

199412143 is an equidigital number, since it uses as much as digits as its factorization.

199412143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28487456.

The product of its digits is 7776, while the sum is 34.

The square root of 199412143 is about 14121.3364452519. The cubic root of 199412143 is about 584.2300172534.

The spelling of 199412143 in words is "one hundred ninety-nine million, four hundred twelve thousand, one hundred forty-three".