10421340023 has 4 divisors (see below), whose sum is σ = 10421681040. Its totient is φ = 10420999008.

The previous prime is 10421339993. The next prime is 10421340067. The reversal of 10421340023 is 32004312401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32004312401 = 24439 ⋅1309559.

It is a cyclic number.

It is not a de Polignac number, because 10421340023 - 2²⁰ = 10420291447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10421339977 and 10421340004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10420340023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119603 + ... + 187476.

It is an arithmetic number, because the mean of its divisors is an integer number (2605420260).

Almost surely, 2^10421340023 is an apocalyptic number.

10421340023 is a deficient number, since it is larger than the sum of its proper divisors (341017).

10421340023 is an equidigital number, since it uses as much as digits as its factorization.

10421340023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341016.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 10421340023 its reverse (32004312401), we get a palindrome (42425652424).

The spelling of 10421340023 in words is "ten billion, four hundred twenty-one million, three hundred forty thousand, twenty-three".