19198042 has 16 divisors (see below), whose sum is σ = 30067272. Its totient is φ = 9184320.

The previous prime is 19197991. The next prime is 19198057. The reversal of 19198042 is 24089191.

It can be written as a sum of positive squares in 4 ways, for example, as 11296321 + 7901721 = 3361^2 + 2811^2 .

It is a junction number, because it is equal to n+sod(n) for n = 19197989 and 19198007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2388 + ... + 6640.

Almost surely, 2^19198042 is an apocalyptic number.

19198042 is a deficient number, since it is larger than the sum of its proper divisors (10869230).

19198042 is a wasteful number, since it uses less digits than its factorization.

19198042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4353.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 19198042 is about 4381.5570291849. The cubic root of 19198042 is about 267.7640772948.

The spelling of 19198042 in words is "nineteen million, one hundred ninety-eight thousand, forty-two".