421101 has 12 divisors (see below), whose sum is σ = 617760. Its totient is φ = 276360.

The previous prime is 421093. The next prime is 421103. The reversal of 421101 is 101124.

It is a happy number.

It is not a de Polignac number, because 421101 - 2³ = 421093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 310 + ... + 968.

It is an arithmetic number, because the mean of its divisors is an integer number (51480).

2⁴²¹¹⁰¹ is an apocalyptic number.

It is an amenable number.

421101 is a deficient number, since it is larger than the sum of its proper divisors (196659).

421101 is a wasteful number, since it uses less digits than its factorization.

421101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 421101 is about 648.9229538243. The cubic root of 421101 is about 74.9541052547.

Adding to 421101 its reverse (101124), we get a palindrome (522225).

The spelling of 421101 in words is "four hundred twenty-one thousand, one hundred one", and thus it is an iban number.