421301321093 has 4 divisors (see below), whose sum is σ = 421305251628. Its totient is φ = 421297390560.

The previous prime is 421301321087. The next prime is 421301321179. The reversal of 421301321093 is 390123103124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 162620240644 + 258681080449 = 403262^2 + 508607^2 .

It is a cyclic number.

It is not a de Polignac number, because 421301321093 - 2³⁰ = 420227579269 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 (421301321053) 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, 1799846 + ... + 2020407.

It is an arithmetic number, because the mean of its divisors is an integer number (105326312907).

Almost surely, 2^421301321093 is an apocalyptic number.

It is an amenable number.

421301321093 is a deficient number, since it is larger than the sum of its proper divisors (3930535).

421301321093 is a wasteful number, since it uses less digits than its factorization.

421301321093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930534.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 421301321093 in words is "four hundred twenty-one billion, three hundred one million, three hundred twenty-one thousand, ninety-three".