1241021449 has 2 divisors, whose sum is σ = 1241021450. Its totient is φ = 1241021448.

The previous prime is 1241021413. The next prime is 1241021473. The reversal of 1241021449 is 9441201421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1240448400 + 573049 = 35220^2 + 757^2 .

It is an emirp because it is prime and its reverse (9441201421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1241021449 - 2¹⁷ = 1240890377 is a prime.

It is not a weakly prime, because it can be changed into another prime (1241021849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620510724 + 620510725.

It is an arithmetic number, because the mean of its divisors is an integer number (620510725).

Almost surely, 2^1241021449 is an apocalyptic number.

It is an amenable number.

1241021449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241021449 is an equidigital number, since it uses as much as digits as its factorization.

1241021449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1241021449 is about 35228.1343389059. The cubic root of 1241021449 is about 1074.6319847907.

The spelling of 1241021449 in words is "one billion, two hundred forty-one million, twenty-one thousand, four hundred forty-nine".