405421234353 has 12 divisors (see below), whose sum is σ = 587346164548. Its totient is φ = 269478800640.

The previous prime is 405421234313. The next prime is 405421234397. The reversal of 405421234353 is 353432124504.

405421234353 is a `hidden beast` number, since 4 + 0 + 5 + 4 + 212 + 3 + 435 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 264219644529 + 141201589824 = 514023^2 + 375768^2 .

It is not a de Polignac number, because 405421234353 - 2²⁶ = 405354125489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405421234313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66831988 + ... + 66838053.

Almost surely, 2^405421234353 is an apocalyptic number.

It is an amenable number.

405421234353 is a deficient number, since it is larger than the sum of its proper divisors (181924930195).

405421234353 is a wasteful number, since it uses less digits than its factorization.

405421234353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133670384 (or 133670381 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 36.

Adding to 405421234353 its reverse (353432124504), we get a palindrome (758853358857).

The spelling of 405421234353 in words is "four hundred five billion, four hundred twenty-one million, two hundred thirty-four thousand, three hundred fifty-three".