1100434421 has 4 divisors (see below), whose sum is σ = 1101022572. Its totient is φ = 1099846272.

The previous prime is 1100434411. The next prime is 1100434441. The reversal of 1100434421 is 1244340011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1244340011 = 503 ⋅2473837.

It can be written as a sum of positive squares in 2 ways, for example, as 502387396 + 598047025 = 22414^2 + 24455^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100434421 - 2¹⁸ = 1100172277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1100434393 and 1100434402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100434411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291260 + ... + 295013.

It is an arithmetic number, because the mean of its divisors is an integer number (275255643).

Almost surely, 2^1100434421 is an apocalyptic number.

It is an amenable number.

1100434421 is a deficient number, since it is larger than the sum of its proper divisors (588151).

1100434421 is an equidigital number, since it uses as much as digits as its factorization.

1100434421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588150.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1100434421 is about 33172.7964000625. The cubic root of 1100434421 is about 1032.4159897408.

Adding to 1100434421 its reverse (1244340011), we get a palindrome (2344774432).

The spelling of 1100434421 in words is "one billion, one hundred million, four hundred thirty-four thousand, four hundred twenty-one".