19420108 has 6 divisors (see below), whose sum is σ = 33985196. Its totient is φ = 9710052.

The previous prime is 19420081. The next prime is 19420123. The reversal of 19420108 is 80102491.

It is a happy number.

It is a super-3 number, since 3×19420108³ (a number of 23 digits) contains 333 as substring.

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 as a sum of consecutive naturals, namely, 2427510 + ... + 2427517.

Almost surely, 2^19420108 is an apocalyptic number.

It is an amenable number.

19420108 is a deficient number, since it is larger than the sum of its proper divisors (14565088).

19420108 is a wasteful number, since it uses less digits than its factorization.

19420108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4855031 (or 4855029 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 19420108 is about 4406.8251610428. The cubic root of 19420108 is about 268.7925414538.

Adding to 19420108 its reverse (80102491), we get a palindrome (99522599).

It can be divided in two parts, 194 and 20108, that added together give a palindrome (20302).

The spelling of 19420108 in words is "nineteen million, four hundred twenty thousand, one hundred eight".