199753642 has 16 divisors (see below), whose sum is σ = 327209472. Its totient is φ = 90702720.

The previous prime is 199753531. The next prime is 199753663. The reversal of 199753642 is 246357991.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 199753592 and 199753601.

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, 19738 + ... + 28090.

It is an arithmetic number, because the mean of its divisors is an integer number (20450592).

Almost surely, 2^199753642 is an apocalyptic number.

199753642 is a deficient number, since it is larger than the sum of its proper divisors (127455830).

199753642 is a wasteful number, since it uses less digits than its factorization.

199753642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9453.

The product of its digits is 408240, while the sum is 46.

The square root of 199753642 is about 14133.4228692132. The cubic root of 199753642 is about 584.5633305959.

The spelling of 199753642 in words is "one hundred ninety-nine million, seven hundred fifty-three thousand, six hundred forty-two".