1241217797 has 2 divisors, whose sum is σ = 1241217798. Its totient is φ = 1241217796.

The previous prime is 1241217781. The next prime is 1241217823. The reversal of 1241217797 is 7977121421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1233344161 + 7873636 = 35119^2 + 2806^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241217797 - 2⁴ = 1241217781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241217097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620608898 + 620608899.

It is an arithmetic number, because the mean of its divisors is an integer number (620608899).

Almost surely, 2^1241217797 is an apocalyptic number.

It is an amenable number.

1241217797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241217797 is an equidigital number, since it uses as much as digits as its factorization.

1241217797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49392, while the sum is 41.

The square root of 1241217797 is about 35230.9210353632. The cubic root of 1241217797 is about 1074.6886560417.

The spelling of 1241217797 in words is "one billion, two hundred forty-one million, two hundred seventeen thousand, seven hundred ninety-seven".