421435434323405 has 8 divisors (see below), whose sum is σ = 505723085912832. Its totient is φ = 337147970975568.

The previous prime is 421435434323389. The next prime is 421435434323413. The reversal of 421435434323405 is 504323434534124.

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 421435434323405 - 2⁴ = 421435434323389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421435434323405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42087257 + ... + 51129326.

It is an arithmetic number, because the mean of its divisors is an integer number (63215385739104).

Almost surely, 2^{421435434323405} is an apocalyptic number.

It is an amenable number.

421435434323405 is a deficient number, since it is larger than the sum of its proper divisors (84287651589427).

421435434323405 is an equidigital number, since it uses as much as digits as its factorization.

421435434323405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94120795.

The product of its (nonzero) digits is 8294400, while the sum is 47.

Adding to 421435434323405 its reverse (504323434534124), we get a palindrome (925758868857529).

The spelling of 421435434323405 in words is "four hundred twenty-one trillion, four hundred thirty-five billion, four hundred thirty-four million, three hundred twenty-three thousand, four hundred five".