19842254 has 8 divisors (see below), whose sum is σ = 29791560. Its totient is φ = 9911736.

The previous prime is 19842241. The next prime is 19842259. The reversal of 19842254 is 45224891.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19842259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664 + ... + 6515.

It is an arithmetic number, because the mean of its divisors is an integer number (3723945).

Almost surely, 2^19842254 is an apocalyptic number.

19842254 is a deficient number, since it is larger than the sum of its proper divisors (9949306).

19842254 is a wasteful number, since it uses less digits than its factorization.

19842254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9394.

The product of its digits is 23040, while the sum is 35.

The square root of 19842254 is about 4454.4645020474. The cubic root of 19842254 is about 270.7262296083.

The spelling of 19842254 in words is "nineteen million, eight hundred forty-two thousand, two hundred fifty-four".