421442105 has 16 divisors (see below), whose sum is σ = 578323200. Its totient is φ = 288816192.

The previous prime is 421442089. The next prime is 421442137. The reversal of 421442105 is 501244124.

It is not a de Polignac number, because 421442105 - 2⁴ = 421442089 is a prime.

It is a super-2 number, since 2×421442105² = 355226895733662050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90371 + ... + 94919.

It is an arithmetic number, because the mean of its divisors is an integer number (36145200).

Almost surely, 2^421442105 is an apocalyptic number.

It is an amenable number.

421442105 is a deficient number, since it is larger than the sum of its proper divisors (156881095).

421442105 is a wasteful number, since it uses less digits than its factorization.

421442105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7208.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 421442105 is about 20529.0551414331. The cubic root of 421442105 is about 749.7433818358.

Adding to 421442105 its reverse (501244124), we get a palindrome (922686229).

The spelling of 421442105 in words is "four hundred twenty-one million, four hundred forty-two thousand, one hundred five".