110421 has 6 divisors (see below), whose sum is σ = 159510. Its totient is φ = 73608.

The previous prime is 110419. The next prime is 110431. The reversal of 110421 is 124011.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 108900 + 1521 = 330^2 + 39^2 .

It is not a de Polignac number, because 110421 - 2¹ = 110419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 12269 = 110421 / (1 + 1 + 0 + 4 + 2 + 1).

110421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110431) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 6126 + ... + 6143.

It is an arithmetic number, because the mean of its divisors is an integer number (26585).

2¹¹⁰⁴²¹ is an apocalyptic number.

It is an amenable number.

110421 is a deficient number, since it is larger than the sum of its proper divisors (49089).

110421 is a wasteful number, since it uses less digits than its factorization.

110421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12275 (or 12272 counting only the distinct ones).

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

The square root of 110421 is about 332.2965543005. The cubic root of 110421 is about 47.9752476547.

Adding to 110421 its reverse (124011), we get a palindrome (234432).

The spelling of 110421 in words is "one hundred ten thousand, four hundred twenty-one", and thus it is an iban number.