1133503421 has 4 divisors (see below), whose sum is σ = 1154890332. Its totient is φ = 1112116512.

The previous prime is 1133503391. The next prime is 1133503433. The reversal of 1133503421 is 1243053311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 512796025 + 620707396 = 22645^2 + 24914^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1133503421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1133508421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10693376 + ... + 10693481.

It is an arithmetic number, because the mean of its divisors is an integer number (288722583).

Almost surely, 2^1133503421 is an apocalyptic number.

It is an amenable number.

1133503421 is a deficient number, since it is larger than the sum of its proper divisors (21386911).

1133503421 is an equidigital number, since it uses as much as digits as its factorization.

1133503421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21386910.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1133503421 is about 33667.5425447121. The cubic root of 1133503421 is about 1042.6557559128.

Adding to 1133503421 its reverse (1243053311), we get a palindrome (2376556732).

The spelling of 1133503421 in words is "one billion, one hundred thirty-three million, five hundred three thousand, four hundred twenty-one".