199340842 has 8 divisors (see below), whose sum is σ = 301018500. Its totient is φ = 99001344.

The previous prime is 199340797. The next prime is 199340849. The reversal of 199340842 is 248043991.

It can be written as a sum of positive squares in 2 ways, for example, as 173422561 + 25918281 = 13169^2 + 5091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 199340795 and 199340804.

It is not an unprimeable number, because it can be changed into a prime (199340849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334167 + ... + 334762.

Almost surely, 2^199340842 is an apocalyptic number.

199340842 is a deficient number, since it is larger than the sum of its proper divisors (101677658).

199340842 is a wasteful number, since it uses less digits than its factorization.

199340842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669080.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 199340842 is about 14118.8116355450. The cubic root of 199340842 is about 584.1603773113.

The spelling of 199340842 in words is "one hundred ninety-nine million, three hundred forty thousand, eight hundred forty-two".