19992420001 has 8 divisors (see below), whose sum is σ = 20152698624. Its totient is φ = 19832349600.

The previous prime is 19992419981. The next prime is 19992420013. The reversal of 19992420001 is 10002429991.

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

It is a cyclic number.

It is not a de Polignac number, because 19992420001 - 2⁵ = 19992419969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19992420101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143676 + ... + 246226.

It is an arithmetic number, because the mean of its divisors is an integer number (2519087328).

Almost surely, 2^19992420001 is an apocalyptic number.

It is an amenable number.

19992420001 is a deficient number, since it is larger than the sum of its proper divisors (160278623).

19992420001 is a wasteful number, since it uses less digits than its factorization.

19992420001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104111.

The product of its (nonzero) digits is 11664, while the sum is 37.

Adding to 19992420001 its reverse (10002429991), we get a palindrome (29994849992).

The spelling of 19992420001 in words is "nineteen billion, nine hundred ninety-two million, four hundred twenty thousand, one".