405105035421 has 8 divisors (see below), whose sum is σ = 540634232800. Its totient is φ = 269822930832.

The previous prime is 405105035411. The next prime is 405105035479. The reversal of 405105035421 is 124530501504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405105035421 - 2¹¹ = 405105033373 is a prime.

It is a super-2 number, since 2×405105035421² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405105035411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61769371 + ... + 61775928.

It is an arithmetic number, because the mean of its divisors is an integer number (67579279100).

Almost surely, 2^405105035421 is an apocalyptic number.

It is an amenable number.

405105035421 is a deficient number, since it is larger than the sum of its proper divisors (135529197379).

405105035421 is a wasteful number, since it uses less digits than its factorization.

405105035421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123546395.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 405105035421 its reverse (124530501504), we get a palindrome (529635536925).

The spelling of 405105035421 in words is "four hundred five billion, one hundred five million, thirty-five thousand, four hundred twenty-one".