421285107603361 has 3 divisors (see below), whose sum is σ = 421285128128593. Its totient is φ = 421285087078130.

The previous prime is 421285107603317. The next prime is 421285107603457. The reversal of 421285107603361 is 163306701582124.

The square root of 421285107603361 is 20525231.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 421285107603361 - 2¹³ = 421285107595169 is a prime.

It is a super-2 number, since 2×421285107603361² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421285107603301) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 10262616 + ... + 30787846.

Almost surely, 2^{421285107603361} is an apocalyptic number.

421285107603361 is the 20525231-st square number.

421285107603361 is the 10262616-th centered octagonal number.

It is an amenable number.

421285107603361 is a deficient number, since it is larger than the sum of its proper divisors (20525232).

421285107603361 is an frugal number, since it uses more digits than its factorization.

421285107603361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41050462 (or 20525231 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 421285107603361 in words is "four hundred twenty-one trillion, two hundred eighty-five billion, one hundred seven million, six hundred three thousand, three hundred sixty-one".