199750297842 has 12 divisors (see below), whose sum is σ = 432792312030. Its totient is φ = 66583432608.

The previous prime is 199750297829. The next prime is 199750297889. The reversal of 199750297842 is 248792057991.

199750297842 is a `hidden beast` number, since 19 + 9 + 7 + 502 + 9 + 78 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 118349072361 + 81401225481 = 344019^2 + 285309^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 199750297842.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 5548619367 + ... + 5548619402.

Almost surely, 2^199750297842 is an apocalyptic number.

199750297842 is an abundant number, since it is smaller than the sum of its proper divisors (233042014188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199750297842 is a wasteful number, since it uses less digits than its factorization.

199750297842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11097238777 (or 11097238774 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 63.

The spelling of 199750297842 in words is "one hundred ninety-nine billion, seven hundred fifty million, two hundred ninety-seven thousand, eight hundred forty-two".