421117 has 4 divisors (see below), whose sum is σ = 422620. Its totient is φ = 419616.

The previous prime is 421103. The next prime is 421121. The reversal of 421117 is 711124.

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

It can be written as a sum of positive squares in 2 ways, for example, as 119716 + 301401 = 346^2 + 549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-421117 is a prime.

It is a Duffinian number.

421117 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 421117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421147) by changing a digit.

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, 192 + ... + 937.

It is an arithmetic number, because the mean of its divisors is an integer number (105655).

2⁴²¹¹¹⁷ is an apocalyptic number.

It is an amenable number.

421117 is a deficient number, since it is larger than the sum of its proper divisors (1503).

421117 is a wasteful number, since it uses less digits than its factorization.

421117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502.

The product of its digits is 56, while the sum is 16.

The square root of 421117 is about 648.9352818271. The cubic root of 421117 is about 74.9550545523.

The spelling of 421117 in words is "four hundred twenty-one thousand, one hundred seventeen", and thus it is an iban number.