1241830921 has 2 divisors, whose sum is σ = 1241830922. Its totient is φ = 1241830920.

The previous prime is 1241830897. The next prime is 1241830949. The reversal of 1241830921 is 1290381421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1239814521 + 2016400 = 35211^2 + 1420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241830921 - 2⁹ = 1241830409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1241830021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620915460 + 620915461.

It is an arithmetic number, because the mean of its divisors is an integer number (620915461).

Almost surely, 2^1241830921 is an apocalyptic number.

It is an amenable number.

1241830921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241830921 is an equidigital number, since it uses as much as digits as its factorization.

1241830921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1241830921 is about 35239.6214650498. The cubic root of 1241830921 is about 1074.8655814623.

The spelling of 1241830921 in words is "one billion, two hundred forty-one million, eight hundred thirty thousand, nine hundred twenty-one".