199704351359042 has 32 divisors (see below), whose sum is σ = 317519303460912. Its totient is φ = 93877296758784.

The previous prime is 199704351359017. The next prime is 199704351359047. The reversal of 199704351359042 is 240953153407991.

It is a Cunningham number, because it is equal to 14131679²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 63586605722641 + 136117745636401 = 7974121^2 + 11666951^2 .

It is not an unprimeable number, because it can be changed into a prime (199704351359047) 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 in 15 ways as a sum of consecutive naturals, for example, 118203398 + ... + 119880990.

Almost surely, 2^{199704351359042} is an apocalyptic number.

199704351359042 is a deficient number, since it is larger than the sum of its proper divisors (117814952101870).

199704351359042 is a wasteful number, since it uses less digits than its factorization.

199704351359042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681382.

The product of its (nonzero) digits is 36741600, while the sum is 62.

The spelling of 199704351359042 in words is "one hundred ninety-nine trillion, seven hundred four billion, three hundred fifty-one million, three hundred fifty-nine thousand, forty-two".