21423002301245 has 8 divisors (see below), whose sum is σ = 25714601858616. Its totient is φ = 17133735776256.

The previous prime is 21423002301199. The next prime is 21423002301251. The reversal of 21423002301245 is 54210320032412.

It can be written as a sum of positive squares in 4 ways, for example, as 109535845444 + 21313466455801 = 330962^2 + 4616651^2 .

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 21423002301245 - 2⁴⁰ = 20323490673469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 583237892 + ... + 583274621.

It is an arithmetic number, because the mean of its divisors is an integer number (3214325232327).

Almost surely, 2^{21423002301245} is an apocalyptic number.

It is an amenable number.

21423002301245 is a deficient number, since it is larger than the sum of its proper divisors (4291599557371).

21423002301245 is a wasteful number, since it uses less digits than its factorization.

21423002301245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166516191.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 21423002301245 its reverse (54210320032412), we get a palindrome (75633322333657).

The spelling of 21423002301245 in words is "twenty-one trillion, four hundred twenty-three billion, two million, three hundred one thousand, two hundred forty-five".