21042342301 has 8 divisors (see below), whose sum is σ = 21591945144. Its totient is φ = 20494471680.

The previous prime is 21042342289. The next prime is 21042342341. The reversal of 21042342301 is 10324324012.

It can be written as a sum of positive squares in 4 ways, for example, as 491686276 + 20550656025 = 22174^2 + 143355^2 .

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 21042342301 - 2⁷ = 21042342173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21042342341) 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, 408426 + ... + 457051.

It is an arithmetic number, because the mean of its divisors is an integer number (2698993143).

Almost surely, 2^21042342301 is an apocalyptic number.

It is an amenable number.

21042342301 is a deficient number, since it is larger than the sum of its proper divisors (549602843).

21042342301 is an equidigital number, since it uses as much as digits as its factorization.

21042342301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866111.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21042342301 its reverse (10324324012), we get a palindrome (31366666313).

The spelling of 21042342301 in words is "twenty-one billion, forty-two million, three hundred forty-two thousand, three hundred one".