420320025333421 has 4 divisors (see below), whose sum is σ = 420320283801244. Its totient is φ = 420319766865600.

The previous prime is 420320025333413. The next prime is 420320025333463. The reversal of 420320025333421 is 124333520023024.

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 103267991871396 + 317052033462025 = 10162086^2 + 17805955^2 .

It is a cyclic number.

It is not a de Polignac number, because 420320025333421 - 2³ = 420320025333413 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 (420320025333491) 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, 126779070 + ... + 130052191.

It is an arithmetic number, because the mean of its divisors is an integer number (105080070950311).

Almost surely, 2^{420320025333421} is an apocalyptic number.

It is an amenable number.

420320025333421 is a deficient number, since it is larger than the sum of its proper divisors (258467823).

420320025333421 is a wasteful number, since it uses less digits than its factorization.

420320025333421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258467822.

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 420320025333421 its reverse (124333520023024), we get a palindrome (544653545356445).

The spelling of 420320025333421 in words is "four hundred twenty trillion, three hundred twenty billion, twenty-five million, three hundred thirty-three thousand, four hundred twenty-one".