1241043191 has 4 divisors (see below), whose sum is σ = 1242482112. Its totient is φ = 1239604272.

The previous prime is 1241043187. The next prime is 1241043217. The reversal of 1241043191 is 1913401421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1913401421 = 193 ⋅9913997.

It is a cyclic number.

It is not a de Polignac number, because 1241043191 - 2² = 1241043187 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 1241043191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241043161) 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, 718166 + ... + 719891.

It is an arithmetic number, because the mean of its divisors is an integer number (310620528).

Almost surely, 2^1241043191 is an apocalyptic number.

1241043191 is a deficient number, since it is larger than the sum of its proper divisors (1438921).

1241043191 is an equidigital number, since it uses as much as digits as its factorization.

1241043191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438920.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1241043191 is about 35228.4429261357. The cubic root of 1241043191 is about 1074.6382604040.

The spelling of 1241043191 in words is "one billion, two hundred forty-one million, forty-three thousand, one hundred ninety-one".