421041020105 has 8 divisors (see below), whose sum is σ = 513531998664. Its totient is φ = 331310966400.

The previous prime is 421041020087. The next prime is 421041020149. The reversal of 421041020105 is 501020140124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17565791296 + 403475228809 = 132536^2 + 635197^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-421041020105 is a prime.

It is a super-2 number, since 2×421041020105² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690230876 + ... + 690231485.

It is an arithmetic number, because the mean of its divisors is an integer number (64191499833).

Almost surely, 2^421041020105 is an apocalyptic number.

It is an amenable number.

421041020105 is a deficient number, since it is larger than the sum of its proper divisors (92490978559).

421041020105 is a wasteful number, since it uses less digits than its factorization.

421041020105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380462427.

The product of its (nonzero) digits is 320, while the sum is 20.

Adding to 421041020105 its reverse (501020140124), we get a palindrome (922061160229).

The spelling of 421041020105 in words is "four hundred twenty-one billion, forty-one million, twenty thousand, one hundred five".