1241241389 has 2 divisors, whose sum is σ = 1241241390. Its totient is φ = 1241241388.

The previous prime is 1241241319. The next prime is 1241241427. The reversal of 1241241389 is 9831421421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781482025 + 459759364 = 27955^2 + 21442^2 .

It is an emirp because it is prime and its reverse (9831421421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1241241389 - 2¹² = 1241237293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241241319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620620694 + 620620695.

It is an arithmetic number, because the mean of its divisors is an integer number (620620695).

Almost surely, 2^1241241389 is an apocalyptic number.

It is an amenable number.

1241241389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241241389 is an equidigital number, since it uses as much as digits as its factorization.

1241241389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 1241241389 is about 35231.2558532903. The cubic root of 1241241389 is about 1074.6954649177.

The spelling of 1241241389 in words is "one billion, two hundred forty-one million, two hundred forty-one thousand, three hundred eighty-nine".