1103421 has 16 divisors (see below), whose sum is σ = 1661760. Its totient is φ = 645120.

The previous prime is 1103371. The next prime is 1103437. The reversal of 1103421 is 1243011.

It is a happy number.

It is not a de Polignac number, because 1103421 - 2⁷ = 1103293 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1103397 and 1103406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103461) 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 15 ways as a sum of consecutive naturals, for example, 381 + ... + 1533.

It is an arithmetic number, because the mean of its divisors is an integer number (103860).

2^1103421 is an apocalyptic number.

1103421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1103421 is a deficient number, since it is larger than the sum of its proper divisors (558339).

1103421 is a wasteful number, since it uses less digits than its factorization.

1103421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1103421 is about 1050.4384798740. The cubic root of 1103421 is about 103.3349138387.

Adding to 1103421 its reverse (1243011), we get a palindrome (2346432).

The spelling of 1103421 in words is "one million, one hundred three thousand, four hundred twenty-one".