199101042 has 48 divisors (see below), whose sum is σ = 522018432. Its totient is φ = 53539200.

The previous prime is 199101031. The next prime is 199101047. The reversal of 199101042 is 240101991.

It is a junction number, because it is equal to n+sod(n) for n = 199100997 and 199101015.

It is not an unprimeable number, because it can be changed into a prime (199101047) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44334 + ... + 48617.

It is an arithmetic number, because the mean of its divisors is an integer number (10875384).

Almost surely, 2^199101042 is an apocalyptic number.

199101042 is an abundant number, since it is smaller than the sum of its proper divisors (322917390).

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

199101042 is a wasteful number, since it uses less digits than its factorization.

199101042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92983 (or 92980 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 199101042 is about 14110.3168639120. The cubic root of 199101042 is about 583.9260418791.

The spelling of 199101042 in words is "one hundred ninety-nine million, one hundred one thousand, forty-two".