199142959 has 2 divisors, whose sum is σ = 199142960. Its totient is φ = 199142958.

The previous prime is 199142939. The next prime is 199142989. The reversal of 199142959 is 959241991.

It is a weak prime.

It is an emirp because it is prime and its reverse (959241991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 199142959 - 2⁵ = 199142927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199142939) by changing a digit.

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 as a sum of consecutive naturals, namely, 99571479 + 99571480.

It is an arithmetic number, because the mean of its divisors is an integer number (99571480).

Almost surely, 2^199142959 is an apocalyptic number.

199142959 is a deficient number, since it is larger than the sum of its proper divisors (1).

199142959 is an equidigital number, since it uses as much as digits as its factorization.

199142959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 262440, while the sum is 49.

The square root of 199142959 is about 14111.8021173768. The cubic root of 199142959 is about 583.9670172387.

The spelling of 199142959 in words is "one hundred ninety-nine million, one hundred forty-two thousand, nine hundred fifty-nine".