420410553205 has 8 divisors (see below), whose sum is σ = 505596589272. Its totient is φ = 335592492288.

The previous prime is 420410553203. The next prime is 420410553221. The reversal of 420410553205 is 502355014024.

It can be written as a sum of positive squares in 4 ways, for example, as 58947469681 + 361463083524 = 242791^2 + 601218^2 .

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 420410553205 - 2¹ = 420410553203 is a prime.

It is a super-2 number, since 2×420410553205² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420410553203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91991272 + ... + 91995841.

It is an arithmetic number, because the mean of its divisors is an integer number (63199573659).

Almost surely, 2^420410553205 is an apocalyptic number.

It is an amenable number.

420410553205 is a deficient number, since it is larger than the sum of its proper divisors (85186036067).

420410553205 is a wasteful number, since it uses less digits than its factorization.

420410553205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183987575.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 420410553205 its reverse (502355014024), we get a palindrome (922765567229).

The spelling of 420410553205 in words is "four hundred twenty billion, four hundred ten million, five hundred fifty-three thousand, two hundred five".