421234330105 has 8 divisors (see below), whose sum is σ = 505486535112. Its totient is φ = 336983904768.

The previous prime is 421234330087. The next prime is 421234330129. The reversal of 421234330105 is 501033432124.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8083628281 + 413150701824 = 89909^2 + 642768^2 .

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 421234330105 - 2¹⁷ = 421234199033 is a prime.

It is a super-2 number, since 2×421234330105² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147529 + ... + 929641.

It is an arithmetic number, because the mean of its divisors is an integer number (63185816889).

Almost surely, 2^421234330105 is an apocalyptic number.

It is an amenable number.

421234330105 is a deficient number, since it is larger than the sum of its proper divisors (84252205007).

421234330105 is a wasteful number, since it uses less digits than its factorization.

421234330105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889835.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 421234330105 its reverse (501033432124), we get a palindrome (922267762229).

The spelling of 421234330105 in words is "four hundred twenty-one billion, two hundred thirty-four million, three hundred thirty thousand, one hundred five".