1242320411 has 2 divisors, whose sum is σ = 1242320412. Its totient is φ = 1242320410.

The previous prime is 1242320383. The next prime is 1242320447. The reversal of 1242320411 is 1140232421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1242320411 - 2²² = 1238126107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1242326411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621160205 + 621160206.

It is an arithmetic number, because the mean of its divisors is an integer number (621160206).

Almost surely, 2^1242320411 is an apocalyptic number.

1242320411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1242320411 is an equidigital number, since it uses as much as digits as its factorization.

1242320411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1242320411 is about 35246.5659462025. The cubic root of 1242320411 is about 1075.0067887799.

Adding to 1242320411 its reverse (1140232421), we get a palindrome (2382552832).

The spelling of 1242320411 in words is "one billion, two hundred forty-two million, three hundred twenty thousand, four hundred eleven".