19419742 has 8 divisors (see below), whose sum is σ = 29749536. Its totient is φ = 9503232.

The previous prime is 19419727. The next prime is 19419761. The reversal of 19419742 is 24791491.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103203 + ... + 103390.

It is an arithmetic number, because the mean of its divisors is an integer number (3718692).

Almost surely, 2^19419742 is an apocalyptic number.

19419742 is a deficient number, since it is larger than the sum of its proper divisors (10329794).

19419742 is a wasteful number, since it uses less digits than its factorization.

19419742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206642.

The product of its digits is 18144, while the sum is 37.

The square root of 19419742 is about 4406.7836343528. The cubic root of 19419742 is about 268.7908528486.

The spelling of 19419742 in words is "nineteen million, four hundred nineteen thousand, seven hundred forty-two".