20424243034123 has 8 divisors (see below), whose sum is σ = 21312321147648. Its totient is φ = 19536170549544.

The previous prime is 20424243034109. The next prime is 20424243034141. The reversal of 20424243034123 is 32143034242402.

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 20424243034123 - 2³³ = 20415653099531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20424243034103) 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, 7102290 + ... + 9554632.

It is an arithmetic number, because the mean of its divisors is an integer number (2664040143456).

Almost surely, 2^{20424243034123} is an apocalyptic number.

20424243034123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20424243034123 is a deficient number, since it is larger than the sum of its proper divisors (888078113525).

20424243034123 is a wasteful number, since it uses less digits than its factorization.

20424243034123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814473.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 20424243034123 its reverse (32143034242402), we get a palindrome (52567277276525).

The spelling of 20424243034123 in words is "twenty trillion, four hundred twenty-four billion, two hundred forty-three million, thirty-four thousand, one hundred twenty-three".