199803042 has 24 divisors (see below), whose sum is σ = 437774220. Its totient is φ = 65852160.

The previous prime is 199803041. The next prime is 199803061. The reversal of 199803042 is 240308991.

It can be written as a sum of positive squares in 2 ways, for example, as 151068681 + 48734361 = 12291^2 + 6981^2 .

It is a junction number, because it is equal to n+sod(n) for n = 199802988 and 199803006.

It is not an unprimeable number, because it can be changed into a prime (199803041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60759 + ... + 63962.

Almost surely, 2^199803042 is an apocalyptic number.

199803042 is an abundant number, since it is smaller than the sum of its proper divisors (237971178).

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

199803042 is a wasteful number, since it uses less digits than its factorization.

199803042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124818 (or 124815 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 199803042 is about 14135.1703916154. The cubic root of 199803042 is about 584.6115150296.

The spelling of 199803042 in words is "one hundred ninety-nine million, eight hundred three thousand, forty-two".