1242304841 has 2 divisors, whose sum is σ = 1242304842. Its totient is φ = 1242304840.

The previous prime is 1242304823. The next prime is 1242304849. The reversal of 1242304841 is 1484032421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1013085241 + 229219600 = 31829^2 + 15140^2 .

It is an emirp because it is prime and its reverse (1484032421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1242304841 - 2²² = 1238110537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242304849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621152420 + 621152421.

It is an arithmetic number, because the mean of its divisors is an integer number (621152421).

Almost surely, 2^1242304841 is an apocalyptic number.

It is an amenable number.

1242304841 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242304841 is an equidigital number, since it uses as much as digits as its factorization.

1242304841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 29.

The square root of 1242304841 is about 35246.3450729292. The cubic root of 1242304841 is about 1075.0022977416.

The spelling of 1242304841 in words is "one billion, two hundred forty-two million, three hundred four thousand, eight hundred forty-one".