199044142 has 16 divisors (see below), whose sum is σ = 326374272. Its totient is φ = 90289720.

The previous prime is 199044121. The next prime is 199044161. The reversal of 199044142 is 241440991.

It is a junction number, because it is equal to n+sod(n) for n = 199044098 and 199044107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2073 + ... + 20059.

It is an arithmetic number, because the mean of its divisors is an integer number (20398392).

Almost surely, 2^199044142 is an apocalyptic number.

199044142 is a deficient number, since it is larger than the sum of its proper divisors (127330130).

199044142 is a wasteful number, since it uses less digits than its factorization.

199044142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18503.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 199044142 is about 14108.3004646201. The cubic root of 199044142 is about 583.8704109005.

The spelling of 199044142 in words is "one hundred ninety-nine million, forty-four thousand, one hundred forty-two".