20420240014403 has 16 divisors (see below), whose sum is σ = 20817908342400. Its totient is φ = 20024608665600.

The previous prime is 20420240014393. The next prime is 20420240014409. The reversal of 20420240014403 is 30441004202402.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20420240014403 - 2²⁸ = 20419971578947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20420240014409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615069398 + ... + 615102596.

It is an arithmetic number, because the mean of its divisors is an integer number (1301119271400).

Almost surely, 2^{20420240014403} is an apocalyptic number.

20420240014403 is a deficient number, since it is larger than the sum of its proper divisors (397668327997).

20420240014403 is a wasteful number, since it uses less digits than its factorization.

20420240014403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63518.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20420240014403 its reverse (30441004202402), we get a palindrome (50861244216805).

The spelling of 20420240014403 in words is "twenty trillion, four hundred twenty billion, two hundred forty million, fourteen thousand, four hundred three".