20103842 has 8 divisors (see below), whose sum is σ = 32897232. Its totient is φ = 9138100.

The previous prime is 20103821. The next prime is 20103859. The reversal of 20103842 is 24830102.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456884 + ... + 456927.

It is an arithmetic number, because the mean of its divisors is an integer number (4112154).

Almost surely, 2^20103842 is an apocalyptic number.

20103842 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20103842 is a deficient number, since it is larger than the sum of its proper divisors (12793390).

20103842 is a wasteful number, since it uses less digits than its factorization.

20103842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913824.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 20103842 is about 4483.7308126158. The cubic root of 20103842 is about 271.9107351980.

Adding to 20103842 its reverse (24830102), we get a palindrome (44933944).

The spelling of 20103842 in words is "twenty million, one hundred three thousand, eight hundred forty-two".