1241643355 has 4 divisors (see below), whose sum is σ = 1489972032. Its totient is φ = 993314680.

The previous prime is 1241643353. The next prime is 1241643383. The reversal of 1241643355 is 5533461421.

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

It is not a de Polignac number, because 1241643355 - 2¹ = 1241643353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1241643355.

It is not an unprimeable number, because it can be changed into a prime (1241643353) 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, 124164331 + ... + 124164340.

It is an arithmetic number, because the mean of its divisors is an integer number (372493008).

Almost surely, 2^1241643355 is an apocalyptic number.

1241643355 is a deficient number, since it is larger than the sum of its proper divisors (248328677).

1241643355 is an equidigital number, since it uses as much as digits as its factorization.

1241643355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248328676.

The product of its digits is 43200, while the sum is 34.

The square root of 1241643355 is about 35236.9600703579. The cubic root of 1241643355 is about 1074.8114628794.

The spelling of 1241643355 in words is "one billion, two hundred forty-one million, six hundred forty-three thousand, three hundred fifty-five".