19197142 has 8 divisors (see below), whose sum is σ = 28845432. Its totient is φ = 9582000.

The previous prime is 19197121. The next prime is 19197149. The reversal of 19197142 is 24179191.

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

It is a junction number, because it is equal to n+sod(n) for n = 19197098 and 19197107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19197149) 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, 6784 + ... + 9187.

It is an arithmetic number, because the mean of its divisors is an integer number (3605679).

Almost surely, 2^19197142 is an apocalyptic number.

19197142 is a deficient number, since it is larger than the sum of its proper divisors (9648290).

19197142 is a wasteful number, since it uses less digits than its factorization.

19197142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16574.

The product of its digits is 4536, while the sum is 34.

The square root of 19197142 is about 4381.4543247648. The cubic root of 19197142 is about 267.7598929890.

The spelling of 19197142 in words is "nineteen million, one hundred ninety-seven thousand, one hundred forty-two".