19107842 has 32 divisors (see below), whose sum is σ = 32277504. Its totient is φ = 8424000.

The previous prime is 19107841. The next prime is 19107853. The reversal of 19107842 is 24870191.

It is a junction number, because it is equal to n+sod(n) for n = 19107799 and 19107808.

It is not an unprimeable number, because it can be changed into a prime (19107841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121628 + ... + 121784.

It is an arithmetic number, because the mean of its divisors is an integer number (1008672).

Almost surely, 2^19107842 is an apocalyptic number.

19107842 is a deficient number, since it is larger than the sum of its proper divisors (13169662).

19107842 is a wasteful number, since it uses less digits than its factorization.

19107842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 19107842 is about 4371.2517657989. The cubic root of 19107842 is about 267.3440649392.

The spelling of 19107842 in words is "nineteen million, one hundred seven thousand, eight hundred forty-two".