19909342 has 8 divisors (see below), whose sum is σ = 29893032. Its totient is φ = 9945000.

The previous prime is 19909303. The next prime is 19909361. The reversal of 19909342 is 24390991.

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, 1909 + ... + 6592.

It is an arithmetic number, because the mean of its divisors is an integer number (3736629).

Almost surely, 2^19909342 is an apocalyptic number.

19909342 is a deficient number, since it is larger than the sum of its proper divisors (9983690).

19909342 is a wasteful number, since it uses less digits than its factorization.

19909342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9674.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 19909342 is about 4461.9885701333. The cubic root of 19909342 is about 271.0310009333.

The spelling of 19909342 in words is "nineteen million, nine hundred nine thousand, three hundred forty-two".