1135421053 has 4 divisors (see below), whose sum is σ = 1222761148. Its totient is φ = 1048080960.

The previous prime is 1135421051. The next prime is 1135421081. The reversal of 1135421053 is 3501245311.

It is a happy number.

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 541865284 + 593555769 = 23278^2 + 24363^2 .

It is a cyclic number.

It is not a de Polignac number, because 1135421053 - 2¹ = 1135421051 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 (1135421051) 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, 43670028 + ... + 43670053.

It is an arithmetic number, because the mean of its divisors is an integer number (305690287).

Almost surely, 2^1135421053 is an apocalyptic number.

1135421053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1135421053 is a deficient number, since it is larger than the sum of its proper divisors (87340095).

1135421053 is an equidigital number, since it uses as much as digits as its factorization.

1135421053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87340094.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1135421053 is about 33696.0094521592. The cubic root of 1135421053 is about 1043.2434040651.

Adding to 1135421053 its reverse (3501245311), we get a palindrome (4636666364).

The spelling of 1135421053 in words is "one billion, one hundred thirty-five million, four hundred twenty-one thousand, fifty-three".