199742150 has 12 divisors (see below), whose sum is σ = 371520492. Its totient is φ = 79896840.

The previous prime is 199742131. The next prime is 199742159. The reversal of 199742150 is 51247991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199742159) 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 5 ways as a sum of consecutive naturals, for example, 1997372 + ... + 1997471.

It is an arithmetic number, because the mean of its divisors is an integer number (30960041).

Almost surely, 2^199742150 is an apocalyptic number.

199742150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199742150 is a deficient number, since it is larger than the sum of its proper divisors (171778342).

199742150 is a wasteful number, since it uses less digits than its factorization.

199742150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3994855 (or 3994850 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 199742150 is about 14133.0163093375. The cubic root of 199742150 is about 584.5521202361.

The spelling of 199742150 in words is "one hundred ninety-nine million, seven hundred forty-two thousand, one hundred fifty".