421115 has 4 divisors (see below), whose sum is σ = 505344. Its totient is φ = 336888.

The previous prime is 421103. The next prime is 421121. The reversal of 421115 is 511124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421115 - 2⁸ = 420859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421115.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 421115.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42107 + ... + 42116.

It is an arithmetic number, because the mean of its divisors is an integer number (126336).

2⁴²¹¹¹⁵ is an apocalyptic number.

421115 is a deficient number, since it is larger than the sum of its proper divisors (84229).

421115 is an equidigital number, since it uses as much as digits as its factorization.

421115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84228.

The product of its digits is 40, while the sum is 14.

The square root of 421115 is about 648.9337408395. The cubic root of 421115 is about 74.9549358914.

Adding to 421115 its reverse (511124), we get a palindrome (932239).

Subtracting 421115 from its reverse (511124), we obtain a palindrome (90009).

The spelling of 421115 in words is "four hundred twenty-one thousand, one hundred fifteen".