1241213917 has 2 divisors, whose sum is σ = 1241213918. Its totient is φ = 1241213916.

The previous prime is 1241213887. The next prime is 1241213933. The reversal of 1241213917 is 7193121421.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1114291161 + 126922756 = 33381^2 + 11266^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241213917 is a prime.

It is a super-2 number, since 2×1241213917² = 3081223975508965778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241213957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620606958 + 620606959.

It is an arithmetic number, because the mean of its divisors is an integer number (620606959).

Almost surely, 2^1241213917 is an apocalyptic number.

It is an amenable number.

1241213917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241213917 is an equidigital number, since it uses as much as digits as its factorization.

1241213917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 1241213917 is about 35230.8659700553. The cubic root of 1241213917 is about 1074.6875362285.

The spelling of 1241213917 in words is "one billion, two hundred forty-one million, two hundred thirteen thousand, nine hundred seventeen".