1241581133 has 4 divisors (see below), whose sum is σ = 1337087388. Its totient is φ = 1146074880.

The previous prime is 1241581123. The next prime is 1241581207. The reversal of 1241581133 is 3311851421.

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 646074724 + 595506409 = 25418^2 + 24403^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241581133 - 2²⁴ = 1224803917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1241581096 and 1241581105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241581123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47753108 + ... + 47753133.

It is an arithmetic number, because the mean of its divisors is an integer number (334271847).

Almost surely, 2^1241581133 is an apocalyptic number.

1241581133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1241581133 is a deficient number, since it is larger than the sum of its proper divisors (95506255).

1241581133 is an equidigital number, since it uses as much as digits as its factorization.

1241581133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95506254.

The product of its digits is 2880, while the sum is 29.

The square root of 1241581133 is about 35236.0771511245. The cubic root of 1241581133 is about 1074.7935087072.

The spelling of 1241581133 in words is "one billion, two hundred forty-one million, five hundred eighty-one thousand, one hundred thirty-three".