1241658421 has 2 divisors, whose sum is σ = 1241658422. Its totient is φ = 1241658420.

The previous prime is 1241658419. The next prime is 1241658433. The reversal of 1241658421 is 1248561421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1241152900 + 505521 = 35230^2 + 711^2 .

It is a cyclic number.

It is not a de Polignac number, because 1241658421 - 2¹ = 1241658419 is a prime.

Together with 1241658419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1241608421) 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, 620829210 + 620829211.

It is an arithmetic number, because the mean of its divisors is an integer number (620829211).

Almost surely, 2^1241658421 is an apocalyptic number.

It is an amenable number.

1241658421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1241658421 is an equidigital number, since it uses as much as digits as its factorization.

1241658421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15360, while the sum is 34.

The square root of 1241658421 is about 35237.1738509206. The cubic root of 1241658421 is about 1074.8158100869.

The spelling of 1241658421 in words is "one billion, two hundred forty-one million, six hundred fifty-eight thousand, four hundred twenty-one".