199953742 has 8 divisors (see below), whose sum is σ = 302682600. Its totient is φ = 99059544.

The previous prime is 199953727. The next prime is 199953769. The reversal of 199953742 is 247359991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 458392 + ... + 458827.

It is an arithmetic number, because the mean of its divisors is an integer number (37835325).

Almost surely, 2^199953742 is an apocalyptic number.

199953742 is a deficient number, since it is larger than the sum of its proper divisors (102728858).

199953742 is a wasteful number, since it uses less digits than its factorization.

199953742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 917330.

The product of its digits is 612360, while the sum is 49.

The square root of 199953742 is about 14140.5000618790. The cubic root of 199953742 is about 584.7584577619.

The spelling of 199953742 in words is "one hundred ninety-nine million, nine hundred fifty-three thousand, seven hundred forty-two".