1100003421 has 32 divisors (see below), whose sum is σ = 1624095360. Its totient is φ = 656691200.

The previous prime is 1100003419. The next prime is 1100003447. The reversal of 1100003421 is 1243000011.

It is a happy number.

It is not a de Polignac number, because 1100003421 - 2¹ = 1100003419 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1100003397 and 1100003406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100005421) 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 31 ways as a sum of consecutive naturals, for example, 1036231 + ... + 1037291.

It is an arithmetic number, because the mean of its divisors is an integer number (50752980).

Almost surely, 2^1100003421 is an apocalyptic number.

1100003421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1100003421 is a deficient number, since it is larger than the sum of its proper divisors (524091939).

1100003421 is a wasteful number, since it uses less digits than its factorization.

1100003421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517.

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

The square root of 1100003421 is about 33166.2994770294. The cubic root of 1100003421 is about 1032.2811855856.

Adding to 1100003421 its reverse (1243000011), we get a palindrome (2343003432).

The spelling of 1100003421 in words is "one billion, one hundred million, three thousand, four hundred twenty-one".