19421110 has 8 divisors (see below), whose sum is σ = 34958016. Its totient is φ = 7768440.

The previous prime is 19421093. The next prime is 19421111. The reversal of 19421110 is 1112491.

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 (19421111) 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, 971046 + ... + 971065.

It is an arithmetic number, because the mean of its divisors is an integer number (4369752).

Almost surely, 2^19421110 is an apocalyptic number.

19421110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19421110 is a deficient number, since it is larger than the sum of its proper divisors (15536906).

19421110 is a wasteful number, since it uses less digits than its factorization.

19421110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1942118.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 19421110 is about 4406.9388468641. The cubic root of 19421110 is about 268.7971642481.

The spelling of 19421110 in words is "nineteen million, four hundred twenty-one thousand, one hundred ten".