1342240243 has 2 divisors, whose sum is σ = 1342240244. Its totient is φ = 1342240242.

The previous prime is 1342240223. The next prime is 1342240261. The reversal of 1342240243 is 3420422431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1342240243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1342240213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671120121 + 671120122.

It is an arithmetic number, because the mean of its divisors is an integer number (671120122).

Almost surely, 2^1342240243 is an apocalyptic number.

1342240243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1342240243 is an equidigital number, since it uses as much as digits as its factorization.

1342240243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 1342240243 is about 36636.5970444854. The cubic root of 1342240243 is about 1103.0878097743.

Adding to 1342240243 its reverse (3420422431), we get a palindrome (4762662674).

The spelling of 1342240243 in words is "one billion, three hundred forty-two million, two hundred forty thousand, two hundred forty-three".