1103243421 has 16 divisors (see below), whose sum is σ = 1681599104. Its totient is φ = 630249984.

The previous prime is 1103243411. The next prime is 1103243423. The reversal of 1103243421 is 1243423011.

It is not a de Polignac number, because 1103243421 - 2¹³ = 1103235229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103243423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133605 + ... + 141621.

It is an arithmetic number, because the mean of its divisors is an integer number (105099944).

Almost surely, 2^1103243421 is an apocalyptic number.

It is an amenable number.

1103243421 is a deficient number, since it is larger than the sum of its proper divisors (578355683).

1103243421 is an equidigital number, since it uses as much as digits as its factorization.

1103243421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14580.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1103243421 is about 33215.1083243755. The cubic root of 1103243421 is about 1033.2937014168.

Adding to 1103243421 its reverse (1243423011), we get a palindrome (2346666432).

The spelling of 1103243421 in words is "one billion, one hundred three million, two hundred forty-three thousand, four hundred twenty-one".