421831105 has 16 divisors (see below), whose sum is σ = 523353600. Its totient is φ = 326062080.

The previous prime is 421831087. The next prime is 421831127. The reversal of 421831105 is 501138124.

It is not a de Polignac number, because 421831105 - 2⁵ = 421831073 is a prime.

It is a super-2 number, since 2×421831105² = 355882962291042050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 421831105.

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 15 ways as a sum of consecutive naturals, for example, 117426 + ... + 120964.

It is an arithmetic number, because the mean of its divisors is an integer number (32709600).

Almost surely, 2^421831105 is an apocalyptic number.

It is an amenable number.

421831105 is a deficient number, since it is larger than the sum of its proper divisors (101522495).

421831105 is a wasteful number, since it uses less digits than its factorization.

421831105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4344.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 421831105 is about 20538.5273327958. The cubic root of 421831105 is about 749.9739872459.

Adding to 421831105 its reverse (501138124), we get a palindrome (922969229).

The spelling of 421831105 in words is "four hundred twenty-one million, eight hundred thirty-one thousand, one hundred five".